US 12,187,865 B2
Porous material with microscale features
Mark H. Tuszynski, La Jolla, CA (US); Jeffrey S. Sakamoto, Ann Arbor, MI (US); Kendell M. Pawelec, Howell, MI (US); Yacov Koffler, San Diego, CA (US); Michael Sailor, La Jolla, CA (US); and Jonathan Zuidema, La Jolla, CA (US)
Assigned to THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed by The Regents of the University of California, Oakland, CA (US); and The Regents of the University of Michigan, Ann Arbor, MI (US)
Filed on Mar. 24, 2023, as Appl. No. 18/126,230.
Application 18/126,230 is a continuation of application No. 16/738,872, filed on Jan. 9, 2020, granted, now 11,680,143.
Claims priority of provisional application 62/790,178, filed on Jan. 9, 2019.
Prior Publication US 2023/0323050 A1, Oct. 12, 2023
Int. Cl. C08J 5/18 (2006.01); A61F 2/02 (2006.01); A61M 31/00 (2006.01); C08K 3/36 (2006.01); A61F 2/30 (2006.01); C08K 3/04 (2006.01); C08K 3/32 (2006.01)
CPC C08J 5/18 (2013.01) [A61F 2/02 (2013.01); A61M 31/002 (2013.01); C08K 3/36 (2013.01); A61F 2002/30316 (2013.01); C08J 2367/04 (2013.01); C08K 3/042 (2017.05); C08K 2003/325 (2013.01); C08K 2201/011 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for producing a porous film material comprising microscale features and a porosity of 60% vol or more, said method comprising:
a) providing a polymer film; and
b) embossing said polymer film to produce said porous film material comprising microscale features; and
comprising contacting said polymer film with a spacer; and/or
wherein said embossing comprises pressing said polymer film against a spacer to produce said microscale features in said polymer film.