Inventor

Walter Hellermann

Inventor

Dorsten, DE

Overview

15→

Patents

1989–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 15 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 bonds24%

B60CVehicle tyres21%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests19%

Y02TClimate change mitigation technologies related to transportation10%

C08LCompositions of macromolecular compounds7%

Y10TTechnical subjects covered by former us classification7%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form5%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients2%

C09DCoating compositions, e.g. paints, varnishes or lacquers2%

E04CStructural elements2%

PatentTitleYear

6,500,554'Process for producing an extrusion-coated metal article'2002 6,119,743'Tire tread of butadiene copolymer, polybutadiene and aromatic oil'2000 6,063,853'Tire treads having low rolling resistance and improved ABS braking'2000 5,942,307'Lightweight building board'1999 5,905,112'Tire tread of diene rubber, and naphthenic and/or paraffinic oil, or aromatic oil and mineral filler'1999 5,147,939'Unsaturated, elastomeric, asymmetrically coupled block copolymer, a single batch process for its manufacture and its use for the production of tire components'1992 5,104,941'3,4-polyisoprene-containing rubber blend mixtures for tire treads'1992 5,100,967'Statistical AB-block copolymers having improved properties, process for their manufacture and their use'1992 5,096,973'ABC block copolymers based on butadiene, isoprene and styrene, process for their production and their use'1992 5,061,758'Unsaturated, elastomeric, asymmetrically, coupled block copolymers, a dual batch process for its manufacture and their use for the production of type components'1991 5,053,459'AB block copolymers based on butadiene, isoprene and styrene'1991 5,008,343'Process for the preparation of polymers based on conjugated dienes and optionally monovinylaromatic compounds'1991 4,981,911'AB block copolymers based on butadiene, isoprene and styrene, process for their preparation and their use'1991 4,894,425'Preparation of polyisoprene having high content of 1,2- and 3,4-structural units by anionic polymerization'1990 4,814,386'ABC block copolymers based on butadiene and isoprene, process for their preparation and use'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2000Patents assigned to HUELS CHEMISCHE WERKE AG (14)· patent assignee history

1989–2002Based in Dorsten, DE· patent location history

2002Patents assigned to DEGUSSA (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HUELS CHEMISCHE WERKE AG	14	1989–2000
DEGUSSA	1	2002

Locations

Location	Patents	Span
Dorsten, DE	15	1989–2002