The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 1990
Filed:
May. 22, 1989
Applicant:
Inventors:
Wilhelm Lamberts, Cologne, DE;
Klaus-Dieter Sommerfeld, Overath, DE;
Dietmar Bielefeldt, Ratingen, DE;
Albrecht Marhold, Leverkusen, DE;
Michael Negele, Cologne, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521131 ; 521 98 ; 521908 ;
Abstract
This invention relates to an improved method of preparing closed cell foams using 1,1,1,4,4,4-hexafluorobutane as a blowing agent and insulating gas in the production of such foams, including isocyanate-based foams such as polyurethane foams and polyisocyanurate foams.
Lamberts, Wilhelm. (1990). Use of 1,1,1,4,4,4-hexaefluorobutane as a blowing and insulating gas for (U.S. Patent No. 4931482). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4931482
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile