Inventor

David Farrar

Inventor

West Yorkshire, GB

Overview

63→

Patents

1985–2018

Patent span

Chemistry

Primary field (CPC C)

Patents· 63 as inventor

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

C08Fprimary

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds17%

C08JWorking-up12%

C09KMaterials for miscellaneous applications, not provided for elsewhere8%

C02FTreatment of water, waste water, sewage, or sludge8%

C07CAcyclic or carbocyclic compounds6%

D21HPulp compositions6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

A61LMethods or apparatus for sterilising materials or objects in general4%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry4%

C10LFuels not otherwise provided for4%

PatentTitleYear

10,023,782Salt-tolerant, thermally-stable rheology modifiers2018 9,611,416'Salt-tolerant, thermally-stable rheology modifiers'2017 7,495,036'Polymeric compositions and their production and uses'2009 5,384,343'Water absorbing polymers'1995 5,362,517'Methods of making crystalline-coated polymeric materials'1994 5,310,774'Molecular weight degradation stabilized polymeric compositions'1994 5,283,272'Process and apparatus for performing chemical reactions'1994 5,280,079'Absorbent products and their manufacture'1994 5,254,221'Processes for the production of paper and paper board'1993 5,210,324'Monomer production'1993 5,185,061'Processes for the production of paper and paper board'1993 5,171,781'Polymeric compositions'1992 5,114,600'Fabric conditioners'1992 5,110,859'Polymers, their production and uses'1992 5,100,660'Thickened acidic aqueous compositions using cross-linked dialkylaminoacrylic microparticles'1992 4,998,876'Combustion of liquid hydrocarbons'1991 4,997,714'Absorbent products and their manufacture'1991 4,996,251'Polymeric compositions and their production'1991 4,979,447'Combustion of carbon containing materials in a furnace'1990 4,980,434'Absorbent polymers, their manufacture and uses'1990 4,962,172'Absorbent products and their manufacture'1990 4,959,502'Catalysts and their use in the hydrolysis of nitriles'1990 4,950,725'Particulate polymers, their production and uses'1990 4,950,747'Polysaccharides'1990 4,950,748'Polysaccharides'1990 4,950,788'Process for producing unsaturated carboxylic acids'1990 4,946,605'Aqueous drilling and packer fluids'1990 4,943,378'Flocculation processes'1990 4,940,763'Water soluble polymers'1990 4,908,045'Engine cleaning additives for diesel fuel'1990 4,906,776'Catalysts and their use in the hydrolysis of nitriles'1990 4,906,732'Treatment of polyacrylamide gel particles with amidase to reduce residual acrylamide content thereof'1990 4,895,687'Process for converting dusty or sticky particulate materials'1990 4,892,916'Polymeric thickeners and their production'1990 4,880,858'Water absorbing polymers'1989 4,876,047'Process for producing sulphonic acid'1989 4,861,539'Process of making water-absorbent, water-insoluble, cross linked fiber or film'1989 4,859,720'Process and compositions for sizing paper'1989 4,835,206'Water soluble polymeric compositions'1989 4,820,645'Testing polyelectrolytes'1989 4,820,872'Process for hydrolyzing nitriles'1989 4,792,343'Dispersing agents'1988 4,789,695'Blends of acrylamide polymers and Mannich bases'1988 4,778,836'Process for dispersing polymer gel particles in aqueous medium'1988 4,759,856'Flocculation processes'1988 4,741,790'Aqueous adhesives and their use'1988 4,720,346'Flocculation processes'1988 4,702,844'Flocculants and their use'1987 4,699,722'Aqueous well fluids'1987 4,677,152'Polymeric compositions'1987 4,675,119'Aqueous drilling and packer fluids'1987 4,673,704'Aqueous polymer dispersions'1987 4,609,755'Synthesis of vinyl esters'1986 4,599,379'Process for the production of polymers and aqueous solutions thereof'1986 4,585,843'Exothermic reactions'1986 4,556,728'Separation of methanol from mixtures containing it'1985 4,554,298'Water soluble polymers'1985 4,554,307'Water soluble polymers and dispersions containing them'1985 4,543,422'Synthesis of vinyl esters'1985 4,543,423'Hydration of nitriles'1985 4,509,987'Calcium carbonate dispersions'1985 4,507,422'Water soluble polymers and dispersions containing them'1985 4,503,172'Water soluble polymers'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1995Patents assigned to ALLIED COLLOIDS LTD (55)· patent assignee history

1985–1995Based in West Yorkshire, GB· patent location history

1985–1994Based in Bradford, GB· patent location history

1990–1991Patents assigned to VELINO VENTURES INC (3)· patent assignee history

1990–1991Based in Scarborough, CA· patent location history

1992–2017Patents assigned to FARRAR DAVID (3)· patent assignee history

1994Based in Portsmouth, VA, US· patent location history

2009Patents assigned to ALLEN ADRIAN SWINBURNE (1)· patent assignee history

2009–2018Based in Idle Bradford, GB· patent location history

2017–2018Patents assigned to ISP INVESTMENTS LLC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ALLIED COLLOIDS LTD	55	1985–1995
FARRAR DAVIDself	3	1992–2017
VELINO VENTURES INC	3	1990–1991
ISP INVESTMENTS LLC	2	2017–2018
ALLEN ADRIAN SWINBURNE	1	2009

Locations

Location	Patents	Span
West Yorkshire, GB	41	1985–1995
Bradford, GB	14	1985–1994
Idle Bradford, GB	3	2009–2018
Scarborough, CA	3	1990–1991
Portsmouth, Virginia, US	1	1994