C03B 2215/47
Bi-concave
C03B2215/47 (Bi-concave) appears on 21 US grants and 9 published applications in this corpus.
Search patents in C03B- Granted patents
- 21
- Published applications
- 9
- Assignees
- 11
- Inventors
- 47
- Latest grant
- 16 Jan 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Glass lens blank for polishing, manufacturing method therefore, and optical lens manufacturing method16 Jan 2018US 9,868,661 B2Hoya Corporation
- Method for manufacturing optical element and device for manufacturing same30 May 2017US 9,662,845 B2Olympus Corporation
- Preform for optical element and optical element16 Apr 2013US 8,420,200 B2Kabushiki Kaisha Ohara
- Lens and process for the production thereof22 Jan 2013US 8,357,624 B2Hoya Corporation
- Preform for optical element and optical element23 Aug 2011US 8,003,186 B2Kabushiki Kaisha Ohara
- Glass lens blank for polishing, manufacturing method therefore, and optical lens manufacturing method11 Feb 2016US 2016/0039703 A1Hoya Corporation
- Method for manufacturing optical element and device for manufacturing same7 Aug 2014US 2014/0217627 A1Olympus Corporation
- Preform for optical element and optical element17 Nov 2011US 2011/0281056 A1Kabushiki Kaisha Ohara
- Preform for Optical Element and Optical Element3 Apr 2008US 2008/0081206 A1Kabushiki Kaisha Ohara
- Lens and process for the production thereof27 Sep 2007US 2007/0225147 A1Hoya Corporation
Most cited
By later US patents
- Method of manufacturing pressed lenses33US 4,629,489 AHoya Corporation · 1986
- Shaped gradient fabrication in lenses by molding from axial gradient28US 5,236,486 ALightPath Technologies, Inc. · 1993
- Mold for molding optical elements20US 5,015,280 AMatsushita Electric Industrial Co., Ltd. · 1991
- Optical element forming apparatus17US 4,698,089 ACanon Kabushiki Kaisha · 1987
- Optical-device forming method and apparatus14US 5,788,732 ACanon Kabushiki Kaisha · 1998