G02B 21/248
Objective turrets
Official title: {objective (or ocular) turrets}
G02B21/248 (Objective turrets) appears on 197 US grants and 232 published applications in this corpus.
Search patents in G02B- Granted patents
- 197
- Published applications
- 232
- Assignees
- 107
- Inventors
- 447
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 7 | 8 |
| 2003 | 7 | 3 |
| 2004 | 3 | 7 |
| 2005 | 3 | 6 |
| 2006 | 8 | 15 |
| 2007 | 2 | 5 |
| 2008 | 6 | 13 |
| 2009 | 7 | 5 |
| 2010 | 4 | 14 |
| 2011 | 4 | 10 |
| 2012 | 8 | 7 |
| 2013 | 11 | 7 |
| 2014 | 5 | 6 |
| 2015 | 7 | 5 |
| 2016 | 9 | 14 |
| 2017 | 6 | 13 |
| 2018 | 14 | 21 |
| 2019 | 10 | 8 |
| 2020 | 10 | 10 |
| 2021 | 9 | 10 |
| 2022 | 13 | 14 |
| 2023 | 4 | 10 |
| 2024 | 4 | 8 |
| 2025 | 13 | 4 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Specimen observation apparatus and specimen observation method16 Jun 2026US 12,656,590 B2Hitachi High-Tech Corporation
- Apparatuses, systems and methods for solid immersion meniscus lenses26 May 2026US 12,638,666 B2University of Washington
- Microscope automatic focusing method, microscope system, medical device, and storage medium21 Apr 2026US 12,607,841 B2Tencent Technology (Shenzhen) Company Limited
- Method of providing an assembled image using digital microscope, digital microscope system, and program for providing an assembled image using a digital microscope17 Mar 2026US 12,578,569 B2PreciPoint GmbH
- AI enabled selective raman spectrometry using microscopy for diagnosis and analysis of biological samples3 Mar 2026US 12,566,323 B2Secretary, Department of Biotechnology
- Microscope objective turret and microscope2 Jul 2026US 2026/0186287 A1AAC Microtech (Changzhou) Co., Ltd.
- Microscope objective turret and microscope2 Jul 2026US 2026/0186288 A1AAC Microtech (Changzhou) Co., Ltd.
- Microscope objective lens turret and microscope18 Jun 2026US 2026/0169276 A1AAC Microtech (Changzhou) Co., Ltd.
- Microscope system and motorized nosepiece driving method2 Apr 2026US 2026/0093100 A1Evident Corporation
- Microscope objective lens switching device12 Mar 2026US 2026/0072263 A1AAC Microtech (Changzhou) Co., Ltd.
Most cited
By later US patents
- Integrated optical measurement instruments140US 5,943,122 ANanometrics Incorporated · 1999
- Computerized video microscopy system33US 5,818,637 A1998
- Optical microscope with variable magnification32US 5,276,550 AOlympus Optical Co., Ltd. · 1994
- Microscope tube having relatively swinging sections26US 4,576,450 ACarl-Zeiss-Stiftung · 1986
- Computerized video microscopy system26US 6,400,395 B12002