Inventor
Hans Hespe
Inventor
Leverkusen, DE
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds36%
A43BCharacteristic features of footwear9%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry9%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form9%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds9%
C08LCompositions of macromolecular compounds9%
G02BOptical elements, systems or apparatus9%
Y10TTechnical subjects covered by former us classification9%
PatentTitleYear
4,820,580'Process for the production of a composite system of a highly elastic material and a polyurethane foam layer and product formed thereby'19894,420,225'Lens of a homo- or copolymer of a fluorine containing styrene polymer'19834,250,292'Process for the preparation of polyurethane elastomers in which at least two reactant portions are introduced into separate positions of a screw machine'19814,225,698'Optical components consisting of aromatic polyesters molded in the form of an optical lens'19804,025,492'Thermoplastic copolyesters and a process for their production'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1989Patents assigned to BAYER AG (5)· patent assignee history
1977–1983Based in Leverkusen, DE· patent location history
1989Based in Pittsburgh, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 5 | 1977–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Leverkusen, DE | 4 | 1977–1983 |
| Pittsburgh, Pennsylvania, US | 1 | 1989 |