Inventor

Herbert F. Askew

Inventor

Wokingham, GB

Overview

20→

Patents

1976–2009

Patent span

Chemistry

Primary field (CPC C)

Patents· 20 as inventor

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

C10Mprimary

C10MLubricating compositions25%

C10NIndexing scheme associated with subclass c10m relating to lubricating compositions25%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium13%

C07DHeterocyclic compounds5%

C09DCoating compositions, e.g. paints, varnishes or lacquers5%

A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents3%

B02CCrushing, pulverising, or disintegrating in general3%

C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals3%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds3%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients3%

PatentTitleYear

7,545,148'Electrochemical sensor'2009 5,226,956'Surface coating compositions'1993 5,083,712'Method of producing fine particles'1992 4,989,794'Method of producing fine particles'1991 4,708,810'Oxidation resistant composition containing a benzothiazoline compound'1987 4,450,087'Vapor lock resistant hydraulic fluids'1984 4,308,156'Hydraulic fluids containing baron-silicon compounds'1981 RE030698'Hydraulic fluids comprising orthosilicate esters'1981 4,255,586'Boron-silicon compounds suitable for use as hydraulic fluids'1981 4,144,247'Lubricating oil additives'1979 4,141,851'Silane derivatives'1979 4,141,846'Lubricant additive'1979 4,097,474'Process for sulfurizing norbornenyl compounds'1978 4,093,554'Hydraulic fluid compositions'1978 4,051,053'Hydraulic fluids comprising orthosilicate esters'1977 4,019,991'Sulphur containing lubricating oil additives'1977 4,016,088'Hydraulic fluids'1977 4,012,331'Sulphur compounds'1977 4,002,568'Lubricating oil compositions'1977 3,994,948'Hydraulic fluids'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1987Patents assigned to CASTROL LTD (8)· patent assignee history

1976–1981Based in Swindon, GB· patent location history

1977–1979Patents assigned to COOPER & CO LTD EDWIN (6)· patent assignee history

1977–1979Based in Wokingham, GB· patent location history

1981Based in Pamber Heath, GB· patent location history

1984Patents assigned to ASKEW HERBERT F (1)· patent assignee history

1984Patents assigned to BRIDGWATER TERRY J P (1)· patent assignee history

1991–1993Patents assigned to ALCAN INT LTD (3)· patent assignee history

1991–1992Based in Turville, GB· patent location history

2009Based in Bicester, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CASTROL LTD	8	1976–1987
COOPER & CO LTD EDWIN	6	1977–1979
ALCAN INT LTD	3	1991–1993
ASKEW HERBERT Fself	1	1984
BRIDGWATER TERRY J P	1	1984

Locations

Location	Patents	Span
Wokingham, GB	6	1977–1979
Swindon, GB	4	1976–1981
Turville, GB	2	1991–1992
Pamber Heath, GB	2	1981
Bicester, GB	1	2009