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. 15, 1976
Filed:
Sep. 04, 1974
Dennis Henry Ogden, Penn, EN;
British Industrial Plastics Limited, Manchester, EN;
Abstract
Improved low-density, self-sustaining urea/formaldehyde foams are prepared by separate foaming of an aqueous solution of a urea/formaldehyde resin and a foaming agent to form a first foam, and foaming an aqueous solution of a hardener and a foaming agent to form a second foam, and mixing the two foams in a liquid feed ratio of resin to hardener of at least 4:1 according to the disclosed process. The resin feed may be preheated prior to foaming. Using resins of high solids content produces foams of relatively low density.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile