Filings by year

G03B 2217/243: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976100
1977120
1978150
1979120
1980160
198190
1982110
198360
198470
1985110
198650
1987140
198880
1989200
1990210
1991270
1992260
1993170
1994200
1995270
1996280
1997360
1998300
1999270
2000180
2001126
2002124
200361
200422
200501
200603
200700
200800
200900
201000
201100
201200
201300
201400
201500
201600
201704
201810
201951
202020
202101
202211

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents