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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.:

US 4022857 B1

PDFFull Text
Date of Patent:
May. 10, 1977

Filed:

Feb. 24, 1975

Production of foamed sulfur compositions

Applicant:
Inventors:

John M Dale, San Antonio, TX (US);

Allen C Ludwig, San Antonio, TX (US);

Assignee:

Chevron Research Company, San Francisco, CA (US);

Attorneys:

Newell; Dix A.

Stoner, Jr.; John

Turner; W. Keith

Primary Examiner:

Robert F White

Assistant Examiner:

John Parrish

Int. Cl.
CPC ...
C04B / ; B29H / ;
U.S. Cl.
CPC ...
264 42 ; 106 70 ;
Abstract

Sulfur-based foams are produced by heating to liquid state a sulfur formulation containing a minor amount of a gas-producing component in a first (molten) zone; passing the mixture maintained in liquid form to a second (mixing) zone where it is mixed with a foaming agent which in combination with the gas-produced compound releases gas, and the gas-containing mixture is passed from the second zone for use as a cellular construction material. Apparatus for carrying out the process is provided.

Find Patent Forward Citations

Dale, John. (1977). Production of foamed sulfur compositions (U.S. Patent No. 4022857). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4022857

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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