WIEDERMANN, ROLF

Patent Applications and Registrations

Patent applications and USPTO patent grants for WIEDERMANN, ROLF.The latest application filed is for "process for the production of rigid foams containing urethane groups and predominantly isocyanurate groups".

Company Profile

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WIEDERMANN, ROLF - ODENTHAL-VOISWI DE
Wiedermann; Rolf - Odenthal DE
Wiedermann; Rolf - Odenthal-Voiswinkel DE
Wiedermann; Rolf - Leverkusen DE
Wiedermann; Rolf - Bergisch-Gladbach DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Process For The Production Of Rigid Foams Containing Urethane Groups And Predominantly Isocyanurate Groups App 20020103268 - WIEDERMANN, ROLF ; et al.	2002-08-01
Process for the production of rigid foams containing urethane and isocyanurate groups Grant 5,367,000 - Wiedermann , et al. November 22, 1	1994-11-22
Process for the production of rigid foams containing urethane and predominantly isocyanurate groups and their use as insulating materials Grant 5,084,485 - Heilig , et al. January 28, 1	1992-01-28
Process for the production of polyurethane foams using sterically hindered aromatic diamines Grant 4,945,120 - Kopp , et al. July 31, 1	1990-07-31
Isocyanate addition products and a process for their production Grant 4,623,672 - Kleinstuck , et al. November 18, 1	1986-11-18
Nonflammable light foams containing urea and urethane groups in which a mono- and/or oligo-saccharide dissolved in water is reacted with a polyisocyanate in the presence of a polyol, a catalyst and a flameproofing agent Grant 4,404,294 - Wiedermann September 13, 1	1983-09-13
Hexahydrotriazine carboxylates and the use thereof as catalysts in the production of polyisocyanurate plastics Grant 4,310,633 - Haas , et al. January 12, 1	1982-01-12
Process for the production of plastics containing isocyanurate groups and urethane groups Grant 4,246,365 - Wiedermann , et al. January 20, 1	1981-01-20
Use of phosphonates as trimerization catalysts for the production of polyisocyanurate synthetic resins Grant 4,235,976 - Haas , et al. November 25, 1	1980-11-25
Polyguanidine foams Grant 3,941,726 - Wiedermann , et al. March 2, 1	1976-03-02
Process for the production of rigid foam resins which contain predominantly isocyanurate ring structures Grant 3,909,465 - Wiedermann , et al. September 30, 1	1975-09-30

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