F24S 2023/838
Involutes
Official title: {involutes}
F24S2023/838 (Involutes) appears on 33 US grants and 17 published applications in this corpus.
Search patents in F24S- Granted patents
- 33
- Published applications
- 17
- Assignees
- 26
- Inventors
- 46
- Latest grant
- 9 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 4 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Secondary reflectors for solar collectors and methods of making the same9 May 2023US 11,644,219 B2Alliance for Sustainable Energy, LLC
- Secondary reflectors for solar collectors and methods of making the same20 Oct 2020US 10,808,965 B2Alliance for Sustainable Energy, LLC
- Reflective solar energy collection system20 Aug 2013US 8,511,298 B2
- Non-imaging diffuse light concentrator26 Jun 2012US 8,207,482 B2
- Performance improvements of symmetry-breaking reflector structures in nonimaging devices13 Jan 2004US 6,676,263 B2The University of Chicago
- Nonimaging asymmetric shadeless collector30 Nov 2023US 2023/0383995 A1The Regents of the University of California
- Secondary reflectors for solar collectors and methods of making the same26 Nov 2020US 2020/0370788 A1Alliance for Sustainable Energy, LLC
- Secondary reflectors for solar collectors and methods of making the same28 Dec 2017US 2017/0370618 A1Alliance for Sustainable Energy, LLC
- Reflective solar energy collection sysetm15 Sep 2011US 2011/0220092 A1
- Secondary reflector for linear fresnel reflector system15 Sep 2011US 2011/0220094 A1Ausra, Inc.
Most cited
By later US patents
- Solar cells with concentrators121US 4,045,246 AMobil Tyco Solar Energy Corporation · 1977
- Radiant energy collector79US 4,002,499 AThe United States of America as represented by the United States Energy Research and Development Administration · 1977
- Nonimaging optical illumination system67US 5,289,356 ANiOptics Corporation · 1994
- Light collectors in cylindrical geometry48US 3,957,031 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Ideal light concentrators with reflector gaps48US 4,230,095 AThe United States of America as represented by the United States Department of Energy · 1980