Inventor

Roger J. Hopper

Inventor

Akron, OH, US

Overview

20→

Patents

1976–2002

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.

C08Kprimary

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients18%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds16%

B60CVehicle tyres11%

C07DHeterocyclic compounds11%

C07CAcyclic or carbocyclic compounds8%

C08LCompositions of macromolecular compounds8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

B01DSeparation3%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%

B29DProducing particular articles from plastics or from substances in a plastic state3%

PatentTitleYear

6,397,910'Retreaded tire having tread with oil rich rubber-based adhesive'2002 5,981,633'Silica reinforced rubber composition and use in tires'1999 5,756,590'Process for preparation of N-halothiosulfonamide modified terpolymers'1998 5,405,985'Preparation of sulfur-containing organosilicon compounds'1995 5,216,066'Tread compounds containing modified EPDM which exhibit good abrasion resistance and improved hysteresis properties'1993 5,070,150'Process for the solid state (solventless) hydroxylation of vinyl-containing rubbers using a hydroxymercaptan'1991 4,910,266'Modification process using N-chloro-thiosulfonamide and rubber'1990 4,877,901'Process for synthesizing N,N\'-dithiobis(sulfonamides)'1989 4,820,780'Modification of rubber with N-chlorothio-sulfonamide'1989 4,755,607'Preparation of 2.2\'-dithiobis(benzothiazole) in an aqueous/alcohol reaction medium'1988 4,755,608'Preparation of 2,2\'-dithiobis(benzothiazole) in an acidic aqueous reacting medium'1988 4,727,105'Oligomeric amine and phenolic antidegradants'1988 4,714,742'Cyanamide derivatives as vulcanization rate modifiers'1987 4,374,732'Resins for removal of organo-sulfur compounds from organic or aqueous media'1983 4,350,818'Preparation of 2-(isopropylsulfinyl)benzothiazole'1982 4,280,967'Vulcanization of rubber with 2-(alkylsulfinyl)-benzothiazoles'1981 4,085,093'Sulfilimines as premature vulcanization inhibitors'1978 4,017,468'N-chlorothiocarboxylic acid amide/imide-modified terpolymers'1977 3,997,605'Preparation of formamide compounds'1976 3,970,133'Chlorothio-sulfonamide-modified rubbery terpolymers and their blends'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2002Patents assigned to GOODYEAR TIRE & RUBBER (20)· patent assignee history

1976–2002Based in Akron, OH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GOODYEAR TIRE & RUBBER	20	1976–2002

Locations

Location	Patents	Span
Akron, OH, US	20	1976–2002