Combination filter for filtering fluids
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 17, 2006
Grant Date -
Jun 17, 2004
app pub date -
Apr 5, 2002
filing date -
Apr 7, 2001
priority date (Note) -
Expired
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Patent Longevity
|
Forward Citations
|
Abstract
The present invention provides a combination filter for filtering fluids comprising a flow channel particulate filtration media having a first face and a second face and a gas adsorbing filtration media. The flow channel particulate filtration media comprises a plurality of flow channels directed in flow direction and defined by inner surfaces. The flow channels having inlet openings through the first face and outlet openings through the second face of the flow channel particulate filtration media. The inner surfaces of said flow channels at least in part are provided with structures protruding therefrom and forming or extending into the flow channels or an electrical charge or a combination of both. The said gas adsorbing filtration media comprises a pad having a first face and a second face and width and length dimensions orthogonal with respect to each other and each individually to the flow direction and having a thickness dimension in flow direction. The pad comprising a layer extending substantially perpendicular to the flow direction across the width and length dimensions of the pad.

First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | Total Patents |
---|---|---|
3M INNOVATIVE PROPERTIES COMPANY | ST PAUL, MN | 8978 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bochynek, Nicolai | Iserlohn, DE | 1 | 23 |
Dominiak, Klaus | Oer-Erkenschwick, DE | 1 | 23 |
Koehler, Frank | Essen, DE | 4 | 28 |
Lotgerink-Bruinenberg, Marcus | Hagen, DE | 3 | 54 |
Cited Art Landscape
Patent Info | (Count) | # Cites | Year |
---|---|---|---|
|
|||
RE31285 Method for manufacturing a filter of electrically charged electret fiber material and electret filters obtained according to said method | 109 | 1981 | |
4668558 Shaped plastic articles having replicated microstructure surfaces | 181 | 1986 | |
4950549 Polypropylene articles and method for preparing same | 59 | 1989 | |
5175030 Microstructure-bearing composite plastic articles and method of making | 318 | 1989 | |
5025052 Fluorochemical oxazolidinones | 153 | 1990 | |
5078925 Preparing polypropylene articles | 37 | 1990 | |
5256231 Method for making a sheet of loop material | 156 | 1990 | |
5077870 Mushroom-type hook strip for a mechanical fastener | 290 | 1990 | |
5133516 Drag reduction article | 99 | 1991 | |
5514120 Liquid management member for absorbent articles | 89 | 1993 | |
5496507 Method of charging electret filter media | 206 | 1994 | |
5472481 Oily mist resistant electret filter media | 120 | 1995 | |
|
|||
5069404 Elliptical ram air pressurized airfoil parachute | 10 | 1989 | |
5099026 Fluorochemical oxazolidinones | 80 | 1991 | |
* 5354365 Air filter assembly | 23 | 1993 | |
|
|||
5405434 Electrostatic particle filtration | 70 | 1993 | |
|
|||
5691846 Ultra-flexible retroreflective cube corner composite sheetings and methods of manufacture | 234 | 1995 | |
* 6280824 Contoured layer channel flow filtration media | 53 | 1999 | |
* 6454839 Electrofiltration apparatus | 21 | 1999 | |
|
|||
5057710 Electret materials and the method for preparing the electret materials | 99 | 1990 | |
|
|||
* 5129929 Sorbent filtration device | 32 | 1990 | |
* 5302354 Filtration device | 52 | 1992 | |
|
|||
4592815 Method of manufacturing an electret filter | 187 | 1985 | |
|
|||
* 4725411 Device for physical and/or chemical treatment of fluids | 29 | 1985 | |
|
|||
* 5338340 Filter and method of making same | 51 | 1993 | |
|
|||
* 6228152 Filtering device for equipping a ventilation and/or heating and/or air conditioning unit, more particularly for a motor vehicle | 16 | 1999 | |
|
|||
* 5288298 Antimicrobial air filter and method of making same | 69 | 1992 | |
|
|||
5158030 Damped flexible seal | 11 | 1992 | |
|
|||
* 6592655 Air cleaner | 36 | 2002 | |
|
|||
4775310 Apparatus for making a separable fastener | 148 | 1986 | |
|
|||
* 4418662 Engine air intake filter with fumes-absorbing substance | 61 | 1981 |
Patent Citation Ranking
Forward Cite Landscape
Patent Info | (Count) | # Cites | Year |
---|---|---|---|
|
|||
* 2007/0233,668 Method, system, and computer program product for semantic annotation of data in a software system | 7 | 2006 | |
|
|||
* 8932380 Dust removal device | 0 | 2010 | |
* 2013/0180,222 DUST REMOVAL DEVICE | 0 | 2010 | |
|
|||
* 7357442 Post pressurizing material treatment for bodies moving through fluid | 2 | 2006 | |
* 9943796 Multi layer pleatable filter medium | 0 | 2010 | |
|
|||
* 2010/0247,404 MULTI LAYER PLEATABLE FILTER MEDIUM | 5 | 2010 | |
|
|||
8617295 Active-particulate air filter having monolith primary filter and polishing filter | 0 | 2009 | |
* 2011/0072,971 ACTIVE-PARTICULATE AIR FILTER HAVING MONOLITH PRIMARY FILTER AND POLISHING FILTER | 0 | 2009 | |
8535406 Filter element utilizing shaped particle-containing nonwoven web | 0 | 2009 | |
|
|||
* 2007/0200,766 Adaptively tunable antennas and method of operation therefore | 100 | 2007 | |
|
|||
7883562 Waved filter media and elements | 8 | 2008 | |
* 2008/0202,078 WAVED FILTER MEDIA AND ELEMENTS | 22 | 2008 | |
* 8608817 Meltblown filter medium | 7 | 2008 | |
* 2009/0120,048 Meltblown Filter Medium | 16 | 2008 | |
8202340 Waved filter media and elements | 8 | 2009 | |
8986432 Meltblown filter medium, related applications and uses | 2 | 2009 | |
* 2010/0000,411 MELTBLOWN FILTER MEDIUM, RELATED APPLICATIONS AND USES | 12 | 2009 | |
8257459 Waved filter media and elements | 6 | 2009 | |
* 2010/0107,881 WAVED FILTER MEDIA AND ELEMENTS | 15 | 2009 | |
8679218 Filter media with a multi-layer structure | 5 | 2010 | |
8950587 Filter media suitable for hydraulic applications | 0 | 2010 | |
* 2011/0079,553 FILTER MEDIA SUITABLE FOR HYDRAULIC APPLICATIONS | 12 | 2010 | |
* 2011/0147,976 MELTBLOWN FILTER MEDIUM | 12 | 2010 | |
* 8197569 Waved filter media and elements | 9 | 2010 | |
* 2011/0162,337 WAVED FILTER MEDIA AND ELEMENTS | 6 | 2010 | |
8882875 Waved filter media and elements | 1 | 2012 | |
9694306 Filter media including polymer compositions and blends | 0 | 2013 | |
9718020 Waved filter media and elements | 0 | 2013 | |
9283501 Filter media with a multi-layer structure | 1 | 2014 | |
9687771 Waved filter media and elements | 0 | 2014 | |
|
|||
* 9913998 Air purifier having an electret module | 0 | 2012 | |
* 2014/0150,797 AIR PURIFIER HAVING AN ELECTRET MODULE | 1 | 2012 | |
|
|||
* 2006/0026,937 Filter assembly including foam and pleated media | 1 | 2004 | |
|
|||
* 2012/0097,036 FILTER AND HOME APPLIANCE COMPRISING THE SAME | 0 | 2011 |
Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events

Matter Detail

Renewals Detail

Note
The template below is formatted to ensure compatibility with our system.
Provide tags with | separated like (tags1|tags2).
Maximum length is 128 characters for Customer Application No
Mandatory Fields * - 'MatterType','AppType','Country','Title','SerialNo'.
Acceptable Date Format - 'MM/DD/YYYY'.
Acceptable Filing/App Types -
- Continuation/Divisional
- Original
- Paris Convention
- PCT National
- With Priority
- EP Validation
- Provisional Conversion
- Reissue
- Provisional
- Foreign Extension
Acceptable Status -
- Pending
- Abandoned
- Unfiled
- Expired
- Granted
Acceptable Matter Types -
- Patent
- Utility Model
- Supplemental Protection Certificate
- Design
- Inventor Certificate
- Plant
- Statutory Invention Reg
Advertisement
Advertisement
Advertisement

Advertisement

Advertisement

Recipient Email Address

Recipient Email Address

Comment
Recipient Email Address

Success
E-mail has been sent successfully.
Failure
Some error occured while sending email. Please check e-mail and try again!
PAIR load has been initiated
A preliminary load of cached data will be loaded soon. Current PAIR data will be loaded within twenty four hours.
File History PDF
Thank you for your purchase! The File Wrapper for Patent Number 6986804 will be available within the next 24 hours.
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:

Last Refreshed On:
Changes done successfully
Important Notes on Latency of Status data
Please note there is up to 60 days of latency in this Status indicator for certain status conditions. You can obtain up-to-date Status indicator readings by ordering PAIR for the file.
An application with the status "Published" (which means it is pending) may be recently abandoned, but not yet updated to reflect its abandoned status. However, an application filed less than one year ago is unlikely to be abandoned.
A patent with the status "Granted" may be recently expired, but not yet updated to reflect its expired status. However, it is highly unlikely a patent less than 3.5 years old would be expired.
An application with the status "Abandoned" is almost always current, but there is a small chance it was recently revived and the status not yet updated.
Important Note on Priority Date data
This priority date is an estimated earliest priority date and is purely an estimation. This date should not be taken as legal conclusion. No representations are made as to the accuracy of the date listed. Please consult a legal professional before relying on this date.
We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.