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:
Dec. 12, 2023
Filed:
Jul. 12, 2022
Using ascorbic acid or sodium ascorbate to extend storage life of base templates for laser finishing
Levi Strauss & Co., San Francisco, CA (US);
Chatura Atukorala, Veyangoda, LK;
James Barton Sights, San Francisco, CA (US);
David Love, Tiburon, CA (US);
Elizabeth O'Neill, Tiburon, CA (US);
Jeff Zens, Emeryville, CA (US);
Benjamin Bell, San Francisco, CA (US);
Jennifer Schultz, Boston, MA (US);
Christopher Schultz, Boston, MA (US);
Debdulal Mahanty, Fremont, CA (US);
Sachith Devendra Samarasinghe, Ragama, LK;
Levi Strauss & Co., San Francisco, CA (US);
Abstract
Indigo-dyed garments are treated with an anti-ozone agent to prevent ozone-related degradation of the garments before laser finishing. Without treatment, the garments can exhibit color loss (e.g., color change or fading) from exposure to ozone in the atmosphere. The indigo-dyed garments with anti-ozone treatment can serve as base templates in a laser finishing process flow. The anti-ozone treatment of the base templates can include a rinse including an ascorbic acid or vitamin C constituent during a base preparation process. Then quantities of these base templates can manufactured and stored for periods of time without exhibiting ozone-related degradation effects.