G02B 21/18
Arrangements with more than one light path
Official title: Arrangements with more than one light path, e.g. for comparing two specimens
G02B21/18 (Arrangements with more than one light path) appears on 1,057 US grants and 1,058 published applications in this corpus.
Search patents in G02B- Granted patents
- 1,057
- Published applications
- 1,058
- Assignees
- 491
- Inventors
- 1,907
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 21 | 0 |
| 1988 | 10 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 13 | 0 |
| 1995 | 6 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 13 | 0 |
| 1999 | 17 | 0 |
| 2000 | 14 | 0 |
| 2001 | 29 | 15 |
| 2002 | 26 | 39 |
| 2003 | 10 | 25 |
| 2004 | 20 | 43 |
| 2005 | 11 | 32 |
| 2006 | 29 | 22 |
| 2007 | 16 | 26 |
| 2008 | 15 | 35 |
| 2009 | 26 | 32 |
| 2010 | 21 | 32 |
| 2011 | 31 | 34 |
| 2012 | 29 | 30 |
| 2013 | 25 | 38 |
| 2014 | 23 | 29 |
| 2015 | 30 | 42 |
| 2016 | 33 | 45 |
| 2017 | 34 | 57 |
| 2018 | 40 | 71 |
| 2019 | 64 | 49 |
| 2020 | 58 | 64 |
| 2021 | 45 | 71 |
| 2022 | 52 | 54 |
| 2023 | 44 | 49 |
| 2024 | 38 | 43 |
| 2025 | 42 | 45 |
| 2026 | 26 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stereoscopic assembly, surgical microscope with stereoscopic assembly, and surgical set6 Oct 2026US 12,754,406 B2Schoelly Fiberoptic GmbH
- Auto-navigating digital surgical microscope29 Sep 2026US 12,746,069 B2Aesculap AG
- Microscope system and system, method, and computer program for a microscope system8 Sep 2026US 12,730,294 B2Leica Instruments (Singapore) Pte. Ltd.
- Methods and systems for volumetric imaging8 Sep 2026US 12,730,295 B2Stellaromics, Inc.
- Reference switch architectures for noncontact sensing of substances18 Aug 2026US 12,710,358 B2Apple Inc.
- Microscope with digital binocular assembly having rigid flex cable connections8 Oct 2026US 2026/0309972 A1Alcon Inc.
- Adjustable binocular tube and surgical microscope1 Oct 2026US 2026/0299277 A1Zumax Medical Co., Ltd.
- Self-Referencing Interferometric Microscope10 Sep 2026US 2026/0267121 A1Camtek Ltd.
- Portable and low-cost microscopic imaging device3 Sep 2026US 2026/0259399 A1Vital Biosciences Inc.
- Optical adapter device and surgical microscope27 Aug 2026US 2026/0251893 A1Zumax Medical Co., Ltd.
Most cited
By later US patents
- Scanning confocal microscope including a single fibre for transmitting light to and receiving light from an object271US 5,120,953 A1992
- Surgical microscope system249US 4,157,859 A1979
- Surgical microscope for conducting computer-supported stereotactic microsurgery and a method for operating the same219US 5,359,417 ACarl-Zeiss-Stiftung · 1994
- Long working distance interference microscope187US 6,721,094 B1Sandia Corporation · 2004
- Medical observing instrument177US 5,601,549 AMachida Endoscope Co., Ltd. · 1997