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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 12282261 B1

PDFFull Text
Date of Patent:
Apr. 21, 2025

Filed:

Oct. 31, 2021

Systems and methods for direct laser writing

Applicant:

Northwestern University, Evanston, IL (US);

Inventors:

Sridhar Krishnaswamy, Lake Forest, IL (US);

Heming Wei, Shanghai, CN;

Wisnu Hadibrata, Evanston, IL (US);

Koray Aydin, Wilmette, IL (US);

Assignee:

Northwestern University, Evanston, IL (US);

Attorney:

Bell & Manning, LLC

Primary Examiner:

Sean M DeGuire

Assistant Examiner:

Andrew Preston Traywick

Int. Cl.
CPC ...
G03F 7/00 (2005.12); B29C 64/153 (2016.12); B29C 64/245 (2016.12); B29C 64/268 (2016.12); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); G02B 1/00 (2005.12); G02B 6/10 (2005.12);
U.S. Cl.
CPC ...
G03F 7/70416 (2012.12); G02B 6/107 (2012.12); G03F 7/0037 (2012.12); B29C 64/153 (2017.07); B29C 64/245 (2017.07); B29C 64/268 (2017.07); B33Y 10/00 (2014.11); B33Y 30/00 (2014.11); G02B 1/002 (2012.12);
Abstract

Methods of fabricating an object via direct laser lithography are provided. In embodiments, such a method comprises illuminating, via an optical fiber having an end facet and a metalens directly on the end facet, a location within a photosensitive composition from which an object is to be fabricated with light, thereby inducing a multiphoton process within the photosensitive composition to generate a region of the object; and repeating the illuminating step one or more additional times at one or more additional locations to generate one or more additional regions of the object.

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Krishnaswamy, Sridhar. (2025). Systems and methods for direct laser writing (U.S. Patent No. 12282261). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12282261

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