A61F 2/91

Made from perforated sheets or tubes

Official title: made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes

A61F2/91 (Made from perforated sheets or tubes) appears on 4,141 US grants and 5,569 published applications in this corpus.

Search patents in A61F
Granted patents
4,141
Published applications
5,569
Assignees
976
Inventors
4,636
Latest grant
6 Oct 2026

Filings by year

A61F 2/91: granted patents and published applications per publication year
YearGranted patentsPublished applications
198310
198400
198500
198600
198700
198850
198910
199010
199100
199250
199320
199430
199590
1996100
1997320
1998610
1999690
2000880
200111271
2002117217
2003158235
2004120312
2005106279
200699300
2007103325
200893337
200999264
2010195258
2011217260
2012214257
2013219240
2014253297
2015189176
2016212224
2017204224
2018158208
2019203178
2020175194
2021133138
2022124130
2023110134
202485120
202593115
20266376

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

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