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:
Nov. 10, 1981
Filed:
Oct. 11, 1977
Dennis H Ogden, Wolverhampton, GB;
British Industrial Plastics Limited, Manchester, GB;
Abstract
Here is described the manufacture of a cured urea/formaldehyde resin foam having a shrinkage on drying of less than 20% by volume, by a method which includes the step of producing a homogeneous wet foam from an aqueous resin solution and an aqueous solution of a hardener for the resin, the freshly made wet foam having a total reactive resin solids content of at least 35% by weight. Apparatus for producing the cured resin foam includes a foaming column having upstream and downstream regions constituted by different inert materials.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile