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:
Oct. 07, 2025
Filed:
Dec. 16, 2020
Applicant:
Avertana Limited, Auckland, NZ;
Inventor:
James Kevin Obern, Parnell, NZ;
Assignee:
AVERTANA LIMITED, Auckland, NZ;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 22/14 (2006.01); C04B 18/06 (2006.01); C04B 28/02 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 22/143 (2013.01); C04B 18/067 (2013.01); C04B 28/02 (2013.01); C04B 2111/00646 (2013.01); C04B 2201/50 (2013.01);
Abstract
The invention provides cement additives comprising calcium sulfate and silica which are derived from a material comprising perovskite and silica, along with cements and cementitious products comprising the cement additives. The invention also provides methods for the making the cement additive and cements and cementitious products comprising the cement additives.