C07F 7/21
Cyclic compounds having at least one ring containing silicon, but no carbon
Official title: Cyclic compounds having at least one ring containing silicon, but no carbon in the ring
C07F7/21 (Cyclic compounds having at least one ring containing silicon, but no carbon) appears on 548 US grants and 382 published applications in this corpus.
Search patents in C07F- Granted patents
- 548
- Published applications
- 382
- Assignees
- 247
- Inventors
- 1,179
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 13 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 11 | 0 |
| 1992 | 16 | 0 |
| 1993 | 22 | 0 |
| 1994 | 13 | 0 |
| 1995 | 18 | 0 |
| 1996 | 11 | 0 |
| 1997 | 13 | 0 |
| 1998 | 11 | 0 |
| 1999 | 20 | 0 |
| 2000 | 13 | 0 |
| 2001 | 19 | 3 |
| 2002 | 13 | 9 |
| 2003 | 5 | 12 |
| 2004 | 7 | 12 |
| 2005 | 8 | 16 |
| 2006 | 10 | 18 |
| 2007 | 10 | 13 |
| 2008 | 10 | 12 |
| 2009 | 11 | 7 |
| 2010 | 17 | 24 |
| 2011 | 10 | 16 |
| 2012 | 14 | 12 |
| 2013 | 17 | 19 |
| 2014 | 15 | 19 |
| 2015 | 18 | 16 |
| 2016 | 21 | 27 |
| 2017 | 16 | 17 |
| 2018 | 17 | 18 |
| 2019 | 15 | 16 |
| 2020 | 19 | 15 |
| 2021 | 10 | 15 |
| 2022 | 5 | 11 |
| 2023 | 13 | 16 |
| 2024 | 9 | 11 |
| 2025 | 8 | 14 |
| 2026 | 10 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composition and method for making picocrystalline artificial borane atoms6 Oct 2026US 12,757,646 B2SemiNuclear, Inc.
- Internal diene compounds and their Pt complexes for catalyzed reactions including hydrosilylation29 Sep 2026US 12,746,537 B2
- POSS viscoelastic hemostatic agents2 Jun 2026US 12,642,886 B2Hybrid Plastics, Inc.
- Method for producing cyclic polysiloxane2 Jun 2026US 12,643,983 B2Shin-Etsu Chemical Co., Ltd.
- Siloxane removal off landfill gas using dielectric barrier discharge plasma19 May 2026US 12,629,634 B2University of South Carolina
- Method of preparing organosilicon compounds with selective cytochrome p450 variants and related compounds and compositions24 Sep 2026US 2026/0286403 A1California Institute of Technology
- Non-fluorinated silane compound, method for preparing the same, and non-fluorinated silane-based organicinorganic hybrid coating composition comprising the same10 Sep 2026US 2026/0265461 A1Gwangju Institute of Science and Technology
- Silane-modified urethane acrylate oligomer and uv-curable coating composition comprising the same10 Sep 2026US 2026/0265571 A1Kcc Corporation
- Sulfur-containing siloxane, composition for forming silicon-containing film comprising said sulfur-containing siloxane, sulfur-containing siloxane production method, silicon-containing film, and silicon-containing film production method20 Aug 2026US 2026/0242947 A1Sumitomo Seika Chemicals Co., Ltd.
- Compound, composition, surface treatment agent, article, method for manufacturing article, and intermediate30 Jul 2026US 2026/0218008 A1AGC Inc.
Most cited
By later US patents
- CVD of silicon-based ceramic materials on internal surface of a reactor587US 5,413,813 AEnichem S.p.A. · 1995
- Enhancing the hydrophilicity of silicone polymers412US 5,397,848 AAllergan, Inc. · 1995
- Hydrolysis-resistant silicone compounds85US 9,056,878 B2Johnson & Johnson Vision Care, Inc. · 2015
- Single component inorganic/organic network materials and precursors thereof84US 5,378,790 AE. I. Du Pont de Nemours and Company · 1995
- Siloxane compounds and their preparation71US 5,220,033 AShin-Etsu Chemical Co., Ltd. · 1993