patentgrepDocs Get an API key

G02B 6/4459

Ducts

Official title: {Ducts; Conduits; Hollow tubes for air blown fibres}

G02B6/4459 (Ducts) appears on 621 US grants and 564 published applications in this corpus.

Search patents in G02B

Granted patents: 621
Published applications: 564
Assignees: 295
Inventors: 1,018
Latest grant: 29 Sep 2026

Filings by year

G02B 6/4459: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	1	0
1977	3	0
1978	0	0
1979	0	0
1980	1	0
1981	1	0
1982	0	0
1983	1	0
1984	0	0
1985	4	0
1986	4	0
1987	7	0
1988	4	0
1989	6	0
1990	2	0
1991	11	0
1992	10	0
1993	12	0
1994	8	0
1995	6	0
1996	3	0
1997	6	0
1998	12	0
1999	11	0
2000	8	0
2001	18	5
2002	16	37
2003	33	25
2004	22	22
2005	21	16
2006	24	22
2007	15	21
2008	19	24
2009	12	14
2010	17	26
2011	14	27
2012	12	15
2013	17	16
2014	16	18
2015	15	26
2016	32	32
2017	25	27
2018	22	26
2019	32	28
2020	29	27
2021	21	22
2022	19	20
2023	12	15
2024	15	21
2025	17	20
2026	5	12

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

Subgroups

Granted patents

Recent patents

Device for providing enhanced feeding of a fiber optic cable through a connector29 Sep 2026US 12,748,278 B2Ppc Broadband, Inc.
Routing tool for installation of fiber optic cables and method of using same25 Aug 2026US 12,717,109 B2Corning Research & Development Corporation
Reticulated tube, optical fiber protective unit, method for protecting optical fiber, and method for manufacturing reticulated tube5 May 2026US 12,620,790 B2Fujikura Ltd.
Flexible cable support10 Feb 2026US 12,546,967 B2Ppc Broadband, Inc.
Sets of modular raceways for structured optical-fiber cabling20 Jan 2026US 12,531,402 B2

Most cited

By later US patents