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B29C 45/231

Needle valve systems therefor

Official title: {Needle valve systems therefor}

B29C45/231 (Needle valve systems therefor) appears on 90 US grants and 68 published applications in this corpus.

Search patents in B29C

Granted patents: 90
Published applications: 68
Assignees: 56
Inventors: 158
Latest grant: 30 Jun 2026

Filings by year

B29C 45/231: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	4	0
1977	0	0
1978	6	0
1979	1	0
1980	1	0
1981	2	0
1982	2	0
1983	0	0
1984	3	0
1985	0	0
1986	1	0
1987	0	0
1988	1	0
1989	3	0
1990	2	0
1991	1	0
1992	2	0
1993	5	0
1994	1	0
1995	2	0
1996	1	0
1997	1	0
1998	0	0
1999	0	0
2000	0	0
2001	1	0
2002	0	0
2003	2	0
2004	0	1
2005	0	1
2006	1	4
2007	2	0
2008	2	1
2009	0	1
2010	0	0
2011	0	0
2012	1	0
2013	0	2
2014	0	1
2015	3	2
2016	2	7
2017	1	3
2018	6	8
2019	1	5
2020	6	4
2021	3	2
2022	3	5
2023	2	7
2024	3	5
2025	10	5
2026	2	4

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

Recent patents

Adjustment method for shut-off nozzle, shut-off nozzle, injection device, and injection molding machine30 Jun 2026US 12,668,008 B2The Japan Steel Works, Ltd.
Shut-off nozzle of vertical injection molding machine, injection device, and vertical injection molding machine16 Jun 2026US 12,654,372 B2The Japan Steel Works, Ltd.
Method and apparatus for controlled injection fluid flow30 Dec 2025US 12,508,756 B2Synventive Molding Solutions, Inc.
Injection nozzle, injection apparatus, and injection molding machine30 Dec 2025US 12,508,760 B2The Japan Steel Works, Ltd.
Component for a nozzle of an injection molding apparatus as well as corresponding nozzle and injection molding apparatus28 Oct 2025US 12,454,085 B2S.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A.

Most cited

By later US patents