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:
Jul. 14, 2026
Filed:
Oct. 29, 2021
Csp Innovations, Inc., Auburn Hills, MI (US);
Hugh Macdowell, Auburn Hills, MI (US);
Michael Hiltunen, Auburn Hills, MI (US);
Steven Prascius, Auburn Hills, MI (US);
CSP INNOVATIONS, INC., Auburn Hills, MI (US);
Abstract
A method of building viscosity in a sheet molding composition is provided that includes a thickening agent of at least one of magnesium oxide, magnesium hydroxide, calcium oxide, calcium hydroxides, zinc oxide, borates, aluminum ion chelates, aluminum trihydrate, polyphosphate, epoxides being mixed into a phenolic resin liquid or solution that includes novolac resin. An initial viscosity results for the mixture. The viscosity builds from the initial viscosity to 36 hours, from 36 to 142 hours, and then from 142 hours to 176 hours to define a slope ratio of viscosities in these time ranges of 1.5-8:1:−0.4-2 and a having terminal viscosity as measured at 176 hours. Alternatively, the initial viscosity is between 500 and 50,000 centiPoise (cP) and at 24 hours thereafter builds to between 1 million to 50 million cP, and the terminal viscosity thereafter of between 10 million and 200 million cP.