Filings by year

C08G 18/38: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976540
1977410
1978500
1979420
1980360
1981400
1982310
1983210
1984320
1985360
1986290
1987430
1988410
1989390
1990360
1991370
1992560
1993360
1994330
1995260
1996380
1997470
1998530
1999460
2000460
20013614
20025753
20035974
20043981
20052563
20063875
20072873
20082667
20093071
20104981
20115173
20124057
20134572
20146179
20156299
20167387
201776127
201869106
201989146
202097137
202184168
202293152
2023112134
202481104
20258588
20265664

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

Subgroups

Granted patents

Recent patents

Most cited

By later US patents