G01B 9/02062
Active error reduction, i.e. varying with time
Official title: {Active error reduction, i.e. varying with time}
G01B9/02062 (Active error reduction, i.e. varying with time) appears on 711 US grants and 697 published applications in this corpus.
Search patents in G01B- Granted patents
- 711
- Published applications
- 697
- Assignees
- 316
- Inventors
- 1,300
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 0 |
| 2002 | 5 | 7 |
| 2003 | 14 | 18 |
| 2004 | 10 | 21 |
| 2005 | 12 | 15 |
| 2006 | 23 | 35 |
| 2007 | 14 | 34 |
| 2008 | 24 | 24 |
| 2009 | 22 | 20 |
| 2010 | 23 | 58 |
| 2011 | 31 | 41 |
| 2012 | 30 | 41 |
| 2013 | 46 | 50 |
| 2014 | 47 | 52 |
| 2015 | 40 | 31 |
| 2016 | 33 | 22 |
| 2017 | 38 | 29 |
| 2018 | 23 | 29 |
| 2019 | 37 | 26 |
| 2020 | 20 | 33 |
| 2021 | 30 | 28 |
| 2022 | 23 | 17 |
| 2023 | 14 | 22 |
| 2024 | 16 | 19 |
| 2025 | 18 | 14 |
| 2026 | 10 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Three-dimensional shape measuring device, reference surface position adjustment method therefor, and measurement mode switching method therefor8 Sep 2026US 12,729,949 B2Tokyo Seimitsu Co., Ltd.
- Bond-selective full-field optical coherence tomography18 Aug 2026US 12,710,262 B2Trustees of Boston University
- Low-bulk interferometric sensor11 Aug 2026US 12,704,369 B2Sciences Et Techniques Industrielles De La Lumiere
- Absolute measurement method for the phase of the complex coherence coefficient4 Aug 2026US 12,698,959 B2Shanghai Institute of Technical Physics, Chinese Academy of Sciences
- Aperture extender for autocollimators and telescopes having index-matching gel or fluid between prism facets28 Jul 2026US 12,693,516 B2
- Three-dimensional shape measuring device, reference surface position adjustment method therefor, and measurement mode switching method therefor17 Sep 2026US 2026/0276364 A1Tokyo Seimitsu Co., Ltd.
- Low-snr optical detection technique using destructive interference20 Aug 2026US 2026/0243685 A1Liom Health AG
- Laser stabilization apparatus and method using homodyne interferometer-type optical reference module13 Aug 2026US 2026/0235393 A1Korea Advanced Institute of Science and Technology
- Parallel optical coherence tomography system using an integrated photonic device4 Jun 2026US 2026/0153324 A1
- Optical coherence tomographic imaging apparatus14 May 2026US 2026/0133025 A1Terumo Kabushiki Kaisha
Most cited
By later US patents
- Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample1,199US 5,321,501 AMassachusetts Institute of Technology · 1994
- Methods and apparatus for forward-directed optical scanning instruments1,184US 6,485,413 B1The General Hospital Corporation · 2002
- Method and apparatus for performing optical measurements1,018US 5,459,570 AMassachusetts Institute of Technology · 1995
- Methods and apparatus for high speed longitudinal scanning in imaging systems551US 6,191,862 B1LightLab Imaging, Inc. · 2001
- Method and apparatus for performing optical frequency domain reflectometry488US 6,160,826 AMassachusetts Institute of Technology · 2000