Membership
Tour
Register
Log in
Wolfgang Lehmann
Follow
Person
Leverkusen, DE
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Polyamines containing urea groups prepared from lactam or aminocarb...
Patent number
4,384,110
Issue date
May 17, 1983
Bayer Aktiengesellschaft
Wilfried Lobach
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Polyamines containing urea groups
Patent number
4,348,514
Issue date
Sep 7, 1982
Bayer Aktiengesellschaft
Wilfried Lobach
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Polyamines containing amide groups
Patent number
4,319,019
Issue date
Mar 9, 1982
Bayer Aktiengesellschaft
Wolfgang Lehmann
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Aqueous reaction of polyamine with alkylene dihalide in presence of...
Patent number
4,254,255
Issue date
Mar 3, 1981
Bayer Aktiengesellschaft
Wilfried Lobach
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Polyalkylenepolyamines containing quaternary dialkylammonium groups
Patent number
4,250,112
Issue date
Feb 10, 1981
Bayer Aktiengesellschaft
Wilfried Lobach
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Polyamines containing amide groups
Patent number
4,250,298
Issue date
Feb 10, 1981
Bayer Aktiengesellschaft
Wolfgang Lehmann
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Polyamines containing amide groups
Patent number
4,250,299
Issue date
Feb 10, 1981
Bayer Aktiengesellschaft
Wolfgang Lehmann
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Polyamines containing acid groups that are useful in papermaking
Patent number
4,166,002
Issue date
Aug 28, 1979
Bayer Aktiengesellschaft
Wolfgang Lehmann
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE