G02B 6/29304
Operating by diffraction
Official title: {operating by diffraction, e.g. grating (G02B6/29301 takes precedence; spectrometers using gratings G01J3/18)}
G02B6/29304 (Operating by diffraction) appears on 1,984 US grants and 1,619 published applications in this corpus.
Search patents in G02B- Granted patents
- 1,984
- Published applications
- 1,619
- Assignees
- 701
- Inventors
- 3,151
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 23 | 0 |
| 1989 | 8 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 8 | 0 |
| 1993 | 7 | 0 |
| 1994 | 18 | 0 |
| 1995 | 21 | 0 |
| 1996 | 17 | 0 |
| 1997 | 29 | 0 |
| 1998 | 42 | 0 |
| 1999 | 50 | 0 |
| 2000 | 68 | 0 |
| 2001 | 112 | 23 |
| 2002 | 104 | 171 |
| 2003 | 127 | 205 |
| 2004 | 137 | 139 |
| 2005 | 135 | 112 |
| 2006 | 113 | 81 |
| 2007 | 100 | 56 |
| 2008 | 71 | 46 |
| 2009 | 43 | 60 |
| 2010 | 42 | 42 |
| 2011 | 33 | 37 |
| 2012 | 45 | 30 |
| 2013 | 43 | 37 |
| 2014 | 28 | 40 |
| 2015 | 31 | 35 |
| 2016 | 42 | 45 |
| 2017 | 45 | 51 |
| 2018 | 44 | 47 |
| 2019 | 46 | 52 |
| 2020 | 55 | 60 |
| 2021 | 57 | 57 |
| 2022 | 41 | 43 |
| 2023 | 52 | 55 |
| 2024 | 38 | 39 |
| 2025 | 19 | 32 |
| 2026 | 20 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Technologies for optical demultiplexing with backwards compatibility6 Oct 2026US 12,754,364 B2Intel Corporation
- Apparatus and methods for high-speed and long depth range imaging using optical coherence tomography15 Sep 2026US 12,736,751 B2The General Hospital Corporation
- Contradirectional-filter architecture having low back-reflection15 Sep 2026US 12,736,752 B2Quintessent Inc.
- Optical isolator based on volume Bragg gratings18 Aug 2026US 12,710,578 B2University of Central Florida Foundation, Inc.
- Beam combining grating with integrated apodizer11 Aug 2026US 12,704,667 B2Raytheon Company
- Mode group demultiplexing method and device based on cascaded diffractive network20 Aug 2026US 2026/0243964 A1Sun Yat-Sen University
- A system for directing incident light onto spatial light modulator planes30 Jul 2026US 2026/0219457 A1Huber+Suhner Polatis Limited
- Optical fiber that combines and demultiplexes light2 Jul 2026US 2026/0186201 A1NTT, Inc.
- Method and System for Imaging and Analysis of a Biological Specimen18 Jun 2026US 2026/0168894 A1The Board of Trustees of the Leland Stanford Junior University
- High mis-alignment tolerate co-package optics28 May 2026US 2026/0147169 A1International Business Machines Corporation
Most cited
By later US patents
- Multi-plane optical apparatus310US 7,573,640 B2Mirage Innovations Ltd. · 2009
- Broadband light source system and method and light source combiner281US 6,570,659 B2LightLab Imaging, Inc. · 2003
- Wavelength-selective optical add/drop using tilting micro-mirrors256US 5,960,133 ATellium, Inc. · 1999
- Fiber optic position and shape sensing device and method relating thereto229US 7,781,724 B2Luna Innovations Incorporated · 2010
- Optical wavelength division multiplexing/demultiplexing system228US 4,773,063 AUniversity of Delaware · 1988