US Patent No: 7,112,280
Number of patents in Portfolio can not be more than 2000
Gas porous polymer filter and methods of use
Stats
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Sep 26, 2006
Issued date -
Aug 12, 2002
filing date -
10/216,241
serial no -
In Force
status
Importance
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Abstract
The filtration device of the present invention relies on materials and methodologies that achieve the formation of a structural matrix that may later accommodate the addition of other adsorbent materials as opposed to merely binding adsorbent materials together through the use of compression and/or binder materials. The filter device of the present invention relies on (i) a unique method of processing to achieve maximum density of materials, (ii) a polymeric material having a distinct morphology and (iii) a very small micron diameter of the polymeric material to create uniformity. For example, in place of compression to increase density, the materials comprising the filtration device of the present invention are instead vibrated into a mold cavity. Thus, the methodology of the current invention optimizes how all of the materials comprising the filtration device fit together without compaction. The material being processed is vibrated as it is gradually poured into the mold. Once the mold cavity has been filled to a point where it will hold no more material, it is heated and then cooled. In place of an external binder, the structural material adheres to itself as it softens. This results in a tortuous path matrix of pores rather than an absolute pore barrier.
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First Claim
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International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,509,605 Filtering straw | 37 | 1994 | |
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| 6,030,558 Sintered porous plastic products and method of making same | 17 | 1998 | |
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| 6,290,848 Filter cartridge for gravity-fed water treatment devices | 44 | 1997 | |
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| 6,524,477 Gravity-flow filtration cartridge for the removal of microorganisms and/or other contaminants | 61 | 1998 | |
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| 6,441,727 Arrangement and method of vehicle tire identification | 27 | 2001 | |
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| 5,552,057 Water-purifying device | 21 | 1995 | |
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| 4,957,671 Manufacture of plastic products | 6 | 1985 | |
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| 5,545,314 Shower water filter assembly | 30 | 1995 | |
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| 5,064,534 Filter for the purification of tap water | 48 | 1987 | |
| 5,126,044 Iodine resin/carbon water purification system | 45 | 1990 | |
| 5,209,887 Process for manufacturing microspherules of activated carbon | 14 | 1991 | |
| 5,273,649 Personal water purification systems | 56 | 1991 | |
| 5,252,206 Filtration cartridge | 30 | 1992 | |
| 5,401,399 Water purification system | 39 | 1993 | |
| 5,431,813 Water filtering bottle | 55 | 1994 | |
| 5,688,397 Combination bottle cap and filter | 24 | 1995 | |
| 5,637,214 Filter assembly for water treatment apparatus | 64 | 1995 | |
| 5,795,471 Shower head having a water purifying function | 34 | 1997 | |
| 5,919,365 Filter device for drinking container | 29 | 1997 | |
| 5,997,229 Screw cover and method | 13 | 1998 | |
| 6,142,384 Personal portable liquid filter device | 13 | 1999 | |
| 6,065,635 Filter straw with cap | 5 | 1999 | |
| 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM | 2009 | ||
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 26, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 26, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |