US Patent No: 6,520,747

Number of patents in Portfolio can not be more than 2000

System for measuring change in fluid flow rate within a line

ALSO PUBLISHED AS: 20020088497
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Abstract

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A method and system for determining change in a fluid's flow rate within a line. The pressure variation in a second fluid, separated from the first by a pumping membrane, is measured in response to energy applied in a time-varying manner to the second fluid. From the response of the second fluid to the applied energy, changes in the flow rate of the first fluid are determined.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DEKA PRODUCTS LIMITED PARTNERSHIPMANCHESTER, NH381

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bryant, Robert Manchester, NH 30 529
Gray, Larry Merrimack, NH 19 473
Morrell, John B Manchester, NH 74 717
Spencer, Geoffrey Manchester, NH 12 390

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ATLAS COPCO COMPRESSORS LLC (1)
5,325,884 Compressed air control system 34 1991
 
BAXTER INTERNATIONAL INC. (1)
5,069,792 Adaptive filter flow control system and method 50 1990
 
Boehringer Mannheim GmbH (1)
5,463,228 Apparatus for the detection of a fluid phase boundary in a transparent measuring tube and for the automatic exact metering of an amount of liquid 22 1993
 
DEKA PRODUCTS LIMITED PARTNERSHIP (1)
6,065,941 System for measuring when fluid has stopped flowing within a line 59 1999
 
DRAEGER MEDICAL SYSTEMS, INC. (1)
5,355,890 Pulse signal extraction apparatus for an automatic blood pressure gauge 24 1994
 
DRUCK LIMITED (1)
5,579,244 Pressure controller 22 1995
 
EDWARDS LIFESCIENCES CORPORATION (1)
5,146,414 Method and apparatus for continuously measuring volumetric flow 80 1990
 
EMERSON ELECTRIC CO. (1)
4,855,714 Fluid status detector 19 1987
 
HALUK TORAL, 11 DELAWARE MANSIONS, DELAWARE ROAD, MAIDA, VALE, LONDON, W.9. UNITED KINGDOM (1)
5,051,922 Method and apparatus for the measurement of gas/liquid flow 49 1989
 
HORIBA, LTD. (1)
5,255,072 Apparatus for analyzing fluid by multi-fluid modulation mode 18 1992
 
KENDALL MCGAW LABORATORIES, INC., A CORP. OF OH (1)
4,431,425 Flow fault sensing system 44 1981
 
Robotics, Inc. (1)
4,662,540 Apparatus for dispensing medium to high viscosity liquids with liquid flow detector and alarm 39 1984
 
Other [Check patent profile for assignment information] (2)
5,272,646 Method for locating leaks in a fluid pipeline and apparatus therefore 62 1991
5,428,527 Method and device for the consideration of varying volume and flow in the control of a continuous flow process 16 1992

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
DEKA PRODUCTS LIMITED PARTNERSHIP (26)
8,158,102 System, device, and method for mixing a substance with a liquid 0 2003
7,662,139 Pump cassette with spiking assembly 5 2003
7,632,078 Pump cassette bank 25 2003
7,632,080 Bezel assembly for pneumatic control 28 2003
7,461,968 System, device, and method for mixing liquids 20 2003
7,354,190 Two-stage mixing system, apparatus, and method 0 2003
7,421,316 Method and device for regulating fluid pump pressures 10 2004
8,292,594 Fluid pumping systems, devices and methods 6 2007
8,317,492 Pumping cassette 5 2007
8,273,049 Pumping cassette 8 2007
7,967,022 Cassette system integrated apparatus 20 2007
8,491,184 Sensor apparatus systems, devices and methods 3 2008
8,246,826 Hemodialysis systems and methods 8 2008
8,042,563 Cassette system integrated apparatus 16 2008
7,853,362 Method and device for regulating fluid pump pressures 0 2008
8,771,508 Dialyzer cartridge mounting arrangement for a hemodialysis system 0 2008
8,562,834 Modular assembly for a portable hemodialysis system 1 2008
8,425,471 Reagent supply for a hemodialysis system 3 2008
8,393,690 Enclosure for a portable hemodialysis system 3 2008
8,357,298 Hemodialysis systems and methods 4 2008
8,409,441 Blood treatment systems and methods 3 2009
8,459,292 Cassette system integrated apparatus 2 2011
8,499,780 Cassette system integrated apparatus 2 2011
8,721,884 Hemodialysis systems and methods 0 2012
8,545,698 Hemodialysis systems and methods 2 2012
8,721,879 Hemodialysis systems and methods 0 2013
 
FRESENIUS MEDICAL CARE HOLDINGS, INC. (6)
7,935,074 Cassette system for peritoneal dialysis machine 25 2006
7,892,197 Automatic prime of an extracorporeal blood circuit 15 2007
8,182,692 Solutions, dialysates, and related methods 0 2008
8,192,401 Medical fluid pump systems and related components and methods 0 2010
8,720,913 Portable peritoneal dialysis carts and related systems 0 2010
8,784,359 Cassette system for peritoneal dialysis machine 0 2011
 
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (4)
8,692,167 Medical device heaters and methods 0 2011
8,721,883 Medical fluid cassettes and related systems 0 2012
8,435,408 Medical fluid cassettes and related systems 2 2012
8,366,921 Dialysis systems and related methods 1 2012
 
VALERITAS, INC. (4)
7,530,968 Hydraulically actuated pump for long duration medicament administration 20 2004
7,914,499 Multi-cartridge fluid delivery device 14 2007
8,070,726 Hydraulically actuated pump for long duration medicament administration 4 2008
8,361,053 Multi-cartridge fluid delivery device 0 2011
 
VALERITAS LLC (1)
8,821,443 Multi-cartridge fluid delivery device 0 2012

Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 18, 2014
Fee Large entity fee small entity fee micro entity fee
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