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:
Aug. 25, 2026
Filed:
Aug. 05, 2025
Applicant:
Quadratic 3d, Inc., Charlestown, MA (US);
Inventors:
Gavin R. Kiel, Cambridge, MA (US);
Samuel N. Sanders, Arlington, MA (US);
Elango Kumarasamy, Arlington, MA (US);
Assignee:
QUADRATIC 3D, INC., Charlestown, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 4/00 (2006.01); B29C 64/129 (2017.01); B29K 33/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C09D 133/06 (2006.01); C09D 133/26 (2006.01);
U.S. Cl.
CPC ...
C09D 4/00 (2013.01); B29C 64/129 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C09D 133/062 (2013.01); C09D 133/26 (2013.01); B29K 2033/26 (2013.01);
Abstract
The present invention includes methods for forming an object in a volume including a photohardenable composition described herein that includes a photohardenable resin component and a photoswitchable photoinitiator comprising a P-type photochromic molecule. The present invention also includes photoswitchable photoinitiators comprising a P-type photochromic molecule, preferably comprising a P-type diarylethene molecule, and photohardenable compositions and methods including such photoswitchable photoinitiators.