Inventor

Stephen R. Ash

Inventor

Lafayette, IN, US

Overview

1978–2021

Patent span

Human necessities

Primary field (CPC A)

Patents· 58 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A61Mprimary

A61MDevices for introducing media into, or onto, the body39%

B01DSeparation10%

A61KPreparations for medical, dental or toiletry purposes8%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations7%

A61LMethods or apparatus for sterilising materials or objects in general6%

A01NPreservation of bodies of humans or animals or plants or parts thereof5%

A61BDiagnosis5%

A61FFilters implantable into blood vessels3%

Y10TTechnical subjects covered by former us classification3%

A61QSpecific use of cosmetics or similar toiletry preparations3%

PatentTitleYear

11,077,239Tributary access device and methods of use2021 10,702,797Carbon block/filtration bed/conical reactor with fluidized bed system allowing small sorbent particles to regenerate fluid during extracorporeal blood treatment2020 10,668,098Oral sorbent for removing toxins of kidney failure combining anion and cation exchangers2020 9,629,368'Antimicrobial compositions and methods of use'2017 9,599,599'Measuring chemical properties of a sample fluid in dialysis systems'2017 9,155,860'Indwelling catheter with anti-clotting features'2015 9,126,011'Anti-clotting indwelling catheter'2015 9,011,897'Catheter lock solution comprising citrate and a paraben'2015 9,003,688'Spin and casting rod with automatic line release'2015 8,945,936'Measuring chemical properties of a sample fluid in dialysis systems'2015 8,845,590'Catheter with distal diffuser'2014 8,703,828'Antimicrobial compositions and methods of use'2014 8,677,694'Roof deflector system'2014 8,409,864'Ammonia sensor and system for use'2013 8,389,583'Antimicrobial compositions and methods of use'2013 8,226,971'Catheter lock solution comprising citrate and a paraben'2012 8,029,457'Indwelling catheter with anti-clotting features'2011 7,998,101'Devices and methods for body fluid flow control in extracorporeal fluid treatment'2011 7,981,280'Recirculation of blood in an extracorporeal blood treatment system'2011 7,947,179'Dialysis system'2011 7,776,210'Dialysis system'2010 7,749,529'Catheter lock solution comprising citrate and a paraben'2010 7,713,226'On demand and post-treatment delivery of saline to a dialysis patient'2010 7,273,465'Device and methods for body fluid flow control in extracorporeal fluid treatments'2007 7,169,303'Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems'2007 7,144,386'Catheter introducer having an expandable tip'2006 6,958,049'Method of enhancing catheter patency using a citrate salt catheter lock solution'2005 6,841,172'Method for iron delivery to a patient by transfer from dialysate'2005 6,409,699'Continuous flow-through peritoneal dialysis (CFPD) method with control of intraperitoneal pressure'2002 6,348,162'Starting dialysate composition for use as an initial dialysate in hemo dialysis'2002 6,264,680'Apparatuses and processes for whole-body hyperthermia'2001 6,190,349'Splittable multiple catheter assembly and methods for inserting the same'2001 6,156,007'Apparatus for whole-body hyperthermia'2000 6,042,561'Non-intravascular infusion access device'2000 5,947,953'Splittable multiple catheter assembly and methods of inserting the same'1999 5,919,369'Hemofiltration and plasmafiltration devices and methods'1999 5,906,978'Method for iron delivery to a patient by transfer from dialysate'1999 5,536,412'Hemofiltration and plasmafiltration devices and methods'1996 D0370531'Peritoneal dialysis catheter implanter'1996 5,476,444'Specialized perfusion protocol for whole-body hyperthermia'1995 5,322,519'Foldable catheter for peritoneal dialysis'1994 5,277,820'Device and method for extracorporeal blood treatment'1994 5,002,054'Interstitial filtration and collection device and method for long-term monitoring of physiological constituents of the body'1991 4,995,268'Method and apparatus for determining a rate of flow of blood for an extracorporeal blood therapy instrument'1991 4,914,819'Eating utensil for indicating when food may be eaten therewith and a method for using the utensil'1990 4,854,322'Capillary filtration and collection device for long-term monitoring of blood constituents'1989 4,777,953'Capillary filtration and collection method for long-term monitoring of blood constituents'1988 4,661,246'Dialysis instrument with dialysate side pump for moving body fluids'1987 4,581,141'Dialysis material and method for removing uremic substances'1986 4,559,039'Permanently placed transcutaneous access device to blood vessels'1985 4,498,902'Catheter guide'1985 4,413,988'Short-tubing set gravity powered peritoneal cycler'1983 4,403,984'System for demand-based adminstration of insulin'1983 4,402,694'Body cavity access device containing a hormone source'1983 4,387,777'Calorie counting method and apparatus'1983 4,368,737'Implantable catheter'1983 4,348,283'Reciprocating dialyzer having spacers'1982 4,071,444'Portable chemical reactor for use as an artificial kidney'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1986Patents assigned to PURDUE RESEARCH FOUNDATION (6)· patent assignee history

1978–2020Based in Lafayette, IN, US· patent location history

1983–2017Patents assigned to ASH STEPHEN R (11)· patent assignee history

1987–2000Patents assigned to ASH MEDICAL SYSTEMS INC (7)· patent assignee history

1994–2021Patents assigned to HEMOCLEANSE INC (9)· patent assignee history

2002–2013Patents assigned to RENAL SOLUTIONS INC (8)· patent assignee history

2021Based in West Lafayette, IN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASH STEPHEN Rself	11	1983–2017
HEMOCLEANSE INC	9	1994–2021
RENAL SOLUTIONS INC	8	2002–2013
ASH MEDICAL SYSTEMS INC	7	1987–2000
PURDUE RESEARCH FOUNDATION	6	1978–1986

Locations

Location	Patents	Span
Lafayette, IN, US	57	1978–2020
West Lafayette, IN, US	1	2021