Inventor

Dietmar Schapel

Inventor

Cologne, DE

Overview

24→

Patents

1977–1994

Patent span

Chemistry

Primary field (CPC C)

Patents· 24 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 bonds15%

C08LCompositions of macromolecular compounds8%

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

A61LMethods or apparatus for sterilising materials or objects in general7%

C04BLime, magnesia7%

Y10TTechnical subjects covered by former us classification5%

A01NPreservation of bodies of humans or animals or plants or parts thereof4%

C02FTreatment of water, waste water, sewage, or sludge4%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management4%

PatentTitleYear

5,362,834'Gel compounds, their production and use'1994 5,173,515'Fire retardant foams comprising expandable graphite, amine salts and phosphorous polyols'1992 4,980,072'Process for the removal of surface-distributed hydrocarbons, in particular oil residues'1990 4,902,348'Reinforced plasterboard and method of forming'1990 4,826,948'Impregnating agent and its use'1989 4,810,536'Method of impregnating'1989 4,748,974'Laminated dressing'1988 4,681,851'Biologically active composition for purifying waste water and outgoing air'1987 4,661,099'Self-adhesive sheet-like structures, process for their preparation and their use'1987 4,634,672'Immobilization of cells in polyurethane hydrogel'1987 4,570,622'Constructional material'1986 4,544,547'Ectoparasiticide-containing polyurethanes'1985 4,543,247'Ectoparasiticide-containing collars for pets'1985 4,469,502'Ion exchanger fertilizers and a process for supplying plants with nutrients uniformly and over a long period of time'1984 4,456,642'Gel pads and a process for their preparation'1984 4,452,905'Aqueous preparation and its use for the preparation of ceramic masses'1984 4,448,914'Aqueous preparation and its use in the production of ceramic compositions'1984 4,411,262'Constructional material'1983 4,404,296'Gel compositions with depot action based on a polyurethane matrix and relatively high molecular weight polyols and containing active ingredients, and a process for their preparation'1983 4,402,725'Fertilizers'1983 4,160,754'Stable polymer gels'1979 4,129,697'Process for the production of thermoformable polyisocyanurate foams'1978 4,094,970'Elastomeric polyurethane-based articles having an insecticidal depot gas action'1978 4,029,593'Mixed polyols'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1994Patents assigned to BAYER AG (24)· patent assignee history

1977–1994Based in Cologne, DE· patent location history

1983Based in DE, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	24	1977–1994

Locations

Location	Patents	Span
Cologne, DE	23	1977–1994
Delaware, US	1	1983