G01J 2009/0223
Common path interferometry
Official title: {Common path interferometry; Point diffraction interferometry}
G01J2009/0223 (Common path interferometry) appears on 25 US grants and 17 published applications in this corpus.
Search patents in G01J- Granted patents
- 25
- Published applications
- 17
- Assignees
- 21
- Inventors
- 48
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 2 | 0 |
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| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
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| 1993 | 1 | 0 |
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| 1996 | 1 | 0 |
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| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 3 | 4 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 3 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Interferometric method for measuring optical distance24 Mar 2026US 12,584,726 B2Zygo Corporation
- Apparatuses and methods for examining the movement of constituents within tissue cells21 Oct 2025US 12,449,358 B2Purdue Research Foundation
- Simultaneous phase-shift point diffraction interferometer and method for detecting wave aberration17 Oct 2023US 11,788,829 B2Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
- Light interference generator and interference imaging device3 Oct 2023US 11,774,288 B2National Institute of Information and Communications Technology
- Method and assembly for analysing the wavefront effect of an optical system30 Aug 2022US 11,426,067 B2Carl Zeiss SMT GmbH
- Interferometric method for measuring optical distance17 Apr 2025US 2025/0123093 A1Zygo Corporation
- Apparatuses and methods for examining the movement of constituents within tissue cells11 Jan 2024US 2024/0011903 A1Purdue Research Foundation
- Simultaneous phase-shift point diffraction interferometer and method for detecting wave aberration25 May 2023US 2023/0160684 A1Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
- Light interference generator and interference imaging device3 Nov 2022US 2022/0349755 A1National Institute of Information and Communications Technology
- Method and assembly for analysing the wavefront effect of an optical system28 Jan 2021US 2021/0022602 A1Carl Zeiss SMT GmbH
Most cited
By later US patents
- Real-time diffraction interferometer29US 4,624,569 ALockheed Missiles & Space Company, Inc. · 1986
- Apparatus and method for measuring an optical imaging system, and detector unit21US 7,088,458 B1Carl Zeiss SMT GmbH · 2006
- Fourier transform spectroscope with quadrangular common path interferometer17US 5,495,334 AResearch Development Corporation of Japan · 1996
- Electro-optic coherent light detector16US 5,245,408 AThe United States of America as represented by the Director, National Security Agency · 1993
- Phase-measuring interferometer14US 4,575,247 ARockwell International Corporation · 1986