Inventor

Hans-Albert Ehlert

Inventor

Leverkusen, DE

Overview

14→

Patents

1992–2005

Patent span

Chemistry

Primary field (CPC C)

Patents· 14 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

D06Mprimary

D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials24%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds14%

C14CChemical treatment of hides, skins or leather, e.g. tanning, impregnating, finishing10%

C08LCompositions of macromolecular compounds8%

Y10TTechnical subjects covered by former us classification8%

D21HPulp compositions6%

C04BLime, magnesia4%

C07CAcyclic or carbocyclic compounds4%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds4%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments4%

PatentTitleYear

6,846,336'Acid-resistant solutions containing aromatic formaldehyde condensation products'2005 6,610,884'Polycarboxylic acids, preparation thereof and use thereof for treating cellulosic fibres or textile or paper materials produced therefrom'2003 5,872,180'Substrates which have been provided with an oil-, water- and soil-repellant treatment and fluorine-containing compositions for this purpose'1999 5,753,569'Substrates which have been provided with an oil-, water- and soil-repellant treatment and fluorine-containing compositions for this purpose'1998 5,693,737'Water-dispersible blocked isocyanates, method of manufacture, and use thereof'1997 5,672,674'Anti-stain finishing of polyamide-containing fibre materials, compositions therefor and polyamide-containing fibre materials thus finished'1997 5,554,711'Polyisocyanate addition compounds containing cyanamide groups and their use'1996 5,518,764'Process for coating textiles'1996 5,508,370'Water-dispersible blocked isocyanates, method of manufacture, and use thereof'1996 5,387,640'Fluorine-containing copolymers and aqueous dispersions prepared therefrom'1995 5,372,731'Composition and process for the finishing of textiles'1994 5,310,855'Aromatic condensation products'1994 5,247,008'Fluorine containing copolymers and aqueous dispersions prepared therefrom'1993 5,153,297'Water-dispersible, electrolyte-stable polyetherester-modified polyurethane ionomers, a process for their production and their use in admixture with polymers containing perfluoroalkyl groups'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2005Patents assigned to BAYER AG (14)· patent assignee history

1992–1999Based in Leverkusen, DE· patent location history

2003–2005Based in Singapore, SG· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	14	1992–2005

Locations

Location	Patents	Span
Leverkusen, DE	12	1992–1999
Singapore, SG	2	2003–2005