Inventor
FREITAG HANS-ALBRECHT
DE11 patents
⚠️ This page may combine multiple inventors who share the name “FREITAG HANS-ALBRECHT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
10 patentsUS4644017AFeb 17, 1987
Process for the production of polyisocyanate addition products and composite polyisocyanate addition products
BAYER AG61 citations95
US4824595AApr 25, 1989
Polyisocyanate compositions containing reversibly blocked catalysts and addition products of sulfonyl isocyanates with catalysts having a tin(II)- or tin(IV)-carboxylate structure
BAYER AG31 citations92
US4618532AOct 21, 1986
Upholstered seat having an air-permeable covering and a cold foam core
BAYER AG26 citations84
US4510269AApr 9, 1985
Process for the production of optionally cellular polyurethanes
BAYER AG14 citations73
US4390640AJun 28, 1983
Process for the production of optionally-foamed polyurethanes
BAYER AG17 citations73
US4379861AApr 12, 1983
Process for the production of polyurethanes using morpholine compounds as catalysts
BAYER AG12 citations73
US5109035AApr 28, 1992
Process for the production of moldings or films of cross-linked polyisocyanate polyadducts and the moldings thus obtained
BAYER AG3 citations62
US4761307AAug 2, 1988
Process for the production of optionally foamed polyurethanes which are combined or fabricated with another material
BAYER AG2 citations62
US4320067AMar 16, 1982
Process for the preparation of modified polyisocyanates
BAYER AG3 citations62
US4644016AFeb 17, 1987
Process for the production of polyurethanes
BAYER AG1 citations51