G02B 6/03616

Optical fibres characterised both by the number of different refractive index layers

Official title: {Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference}

G02B6/03616 (Optical fibres characterised both by the number of different refractive index layers) appears on 1,842 US grants and 1,722 published applications in this corpus.

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Granted patents: 1,842
Published applications: 1,722
Assignees: 388
Inventors: 2,188
Latest grant: 22 Sep 2026

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G02B 6/03616: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	4	0
1977	1	0
1978	5	0
1979	8	0
1980	11	0
1981	6	0
1982	2	0
1983	5	0
1984	8	0
1985	0	0
1986	2	0
1987	10	0
1988	6	0
1989	11	0
1990	4	0
1991	9	0
1992	7	0
1993	3	0
1994	9	0
1995	7	0
1996	13	0
1997	19	0
1998	29	0
1999	31	0
2000	24	0
2001	52	29
2002	85	111
2003	99	115
2004	88	101
2005	82	73
2006	81	59
2007	65	63
2008	59	68
2009	50	68
2010	52	69
2011	44	77
2012	55	61
2013	64	73
2014	77	70
2015	80	64
2016	71	59
2017	69	71
2018	60	83
2019	59	76
2020	82	62
2021	54	62
2022	51	48
2023	44	59
2024	31	41
2025	31	39
2026	23	21

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

Optical fibres characterised both by the number of different refractive index layers

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