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C09K 11/77

Containing rare earth metals

Official title: containing rare earth metals

C09K11/77 (Containing rare earth metals) appears on 4,554 US grants and 4,959 published applications in this corpus.

Search patents in C09K

Granted patents: 4,554
Published applications: 4,959
Assignees: 1,238
Inventors: 6,910
Latest grant: 22 Sep 2026

Filings by year

C09K 11/77: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	19	0
1977	34	0
1978	43	0
1979	22	0
1980	25	0
1981	22	0
1982	18	0
1983	11	0
1984	21	0
1985	27	0
1986	23	0
1987	23	0
1988	30	0
1989	29	0
1990	46	0
1991	51	0
1992	48	0
1993	27	0
1994	36	0
1995	41	0
1996	47	0
1997	44	0
1998	48	0
1999	49	0
2000	64	0
2001	66	38
2002	62	106
2003	102	117
2004	103	200
2005	73	241
2006	139	258
2007	168	264
2008	121	250
2009	149	270
2010	166	266
2011	167	217
2012	204	299
2013	205	298
2014	224	204
2015	232	221
2016	183	201
2017	168	188
2018	160	170
2019	149	196
2020	152	167
2021	159	178
2022	162	185
2023	120	144
2024	115	129
2025	101	91
2026	56	61

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

Recent patents

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Wavelength converter, light source device, and projector22 Sep 2026US 12,743,012 B2Seiko Epson Corporation
Phosphor powder, wavelength conversion body, and light emitting device15 Sep 2026US 12,735,639 B2Denka Company Limited
Method of producing a crystal for a scintillation crystal detector and a crystal for a scintillation crystal detector8 Sep 2026US 12,729,455 B2Crytur, Spol.S R.O.

Most cited

By later US patents