Inventor

Francis Bentz

Inventor

Cologne, DE

Overview

20→

Patents

1976–1981

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.

C08Gprimary

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds18%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

C08LCompositions of macromolecular compounds11%

C07CAcyclic or carbocyclic compounds9%

D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons9%

D06PDyeing or printing textiles9%

B01DSeparation7%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients7%

C07DHeterocyclic compounds2%

PatentTitleYear

4,252,652'Process of using a semi-permeable membrane of acrylonitrile copolymers'1981 4,245,110'Polyalkylene oxide-containing urethane polyols with sulphonic acid groups'1981 4,221,903'Semipermeable membranes of heterocyclic copolyamides'1980 4,217,227'Semipermeable membranes of copolyamides'1980 4,166,186'Dihydroxy carbamates containing sulphonic acid groups'1979 4,163,088'Antistatic polyamide compositions with polyalkyleneglycol ether having secondary terminal urethane groups'1979 4,145,500'Stabilization of crosslinkable polymers'1979 4,111,920'Polyether urethanes as antistatic additives in polyamide compositions'1978 4,108,936'Process for dyeing wet-spun aromatic polyamides in gel form'1978 4,078,889'Process for dyeing dry-spun aromatic polyamides'1978 4,076,925'Stabilizing crosslinkable copolymers comprising acrylonitrile, N-methylol alkyl ether of unsaturated carboxylic acid amide with (a) amide (b) lactam or (c) urea compounds'1978 4,066,396'Dyeing dry-spun aromatic polyamides'1978 4,059,556'Spinnable solutions containing crosslinkable copolymers of acrylonitrile and N-methylol alkyl ether acrylamides'1977 4,059,403'Process for dyeing wet-spun aromatic polyamides in gel form'1977 4,056,564'Dihydroxy sulphonates containing ether structures'1977 4,052,355'Acrylonitrile polymer solutions'1977 4,048,221'Diols containing sulphonic acid groups based on dihydroxy alkenes'1977 3,991,015'High molecular weight copolyamides containing quinazoline dione units'1976 3,940,376'Permanently antistatic shaped structures of acrylonitrile polymers'1976 3,935,174'2-Methylene propane phosphonic acid esters and their copolymer with acrylonitrile'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1981Patents assigned to BAYER AG (20)· patent assignee history

1976–1981Based in Cologne, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	20	1976–1981

Locations

Location	Patents	Span
Cologne, DE	20	1976–1981