A61K 31/357

Having two or more oxygen atoms in the same ring

Official title: having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel

A61K31/357 (Having two or more oxygen atoms in the same ring) appears on 1,406 US grants and 2,537 published applications in this corpus.

Search patents in A61K
Granted patents
1,406
Published applications
2,537
Assignees
1,185
Inventors
5,317
Latest grant
29 Sep 2026

Filings by year

A61K 31/357: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197920
198010
198100
198210
198330
198400
198510
198630
198720
198810
198910
199000
199110
199230
199350
199430
199550
199660
199790
1998100
1999170
2000160
2001207
20021732
20031227
20041152
20051035
20061848
2007539
20081250
20091962
20102973
20112279
20123778
201347106
201475130
201578150
201686131
201796136
201889117
201996151
202095151
202185163
202277135
202370157
202490151
202577160
202642117

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

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