G11B 7/1353
Diffractive elements
Official title: Diffractive elements, e.g. holograms or gratings {(diffraction gratings per se G02B5/18; holograms per se G02B5/32; grating systems G02B27/44)}
G11B7/1353 (Diffractive elements) appears on 1,783 US grants and 1,457 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,783
- Published applications
- 1,457
- Assignees
- 248
- Inventors
- 1,746
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 13 | 0 |
| 1989 | 15 | 0 |
| 1990 | 17 | 0 |
| 1991 | 25 | 0 |
| 1992 | 28 | 0 |
| 1993 | 23 | 0 |
| 1994 | 23 | 0 |
| 1995 | 31 | 0 |
| 1996 | 35 | 0 |
| 1997 | 60 | 0 |
| 1998 | 87 | 0 |
| 1999 | 76 | 0 |
| 2000 | 81 | 0 |
| 2001 | 69 | 67 |
| 2002 | 84 | 113 |
| 2003 | 74 | 105 |
| 2004 | 82 | 142 |
| 2005 | 85 | 161 |
| 2006 | 101 | 145 |
| 2007 | 104 | 148 |
| 2008 | 99 | 154 |
| 2009 | 87 | 97 |
| 2010 | 115 | 93 |
| 2011 | 115 | 64 |
| 2012 | 87 | 56 |
| 2013 | 65 | 37 |
| 2014 | 28 | 21 |
| 2015 | 12 | 11 |
| 2016 | 12 | 13 |
| 2017 | 7 | 4 |
| 2018 | 8 | 4 |
| 2019 | 1 | 5 |
| 2020 | 7 | 4 |
| 2021 | 4 | 5 |
| 2022 | 5 | 2 |
| 2023 | 2 | 1 |
| 2024 | 6 | 4 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Achromatic holographic phase masks2 Sep 2025US 12,405,482 B2Ipg Photonics Corporation
- Method and system for forming birefringent voxels31 Dec 2024US 12,183,378 B2Microsoft Technology Licensing, LLC
- Optical memory, optical diffraction element, and recording method12 Nov 2024US 12,142,307 B2Fujikura Ltd.
- Optical identifier and system for reading same12 Nov 2024US 12,142,308 B2Neursciences LLC
- Method for reading and writing with holographic storage system and holographic storage system9 Jul 2024US 12,033,680 B1National Central University
- Achromatic holographic phase marks18 Dec 2025US 2025/0383554 A1Ipg Photonics Corporation
- Method and system for forming birefringent voxels3 Oct 2024US 2024/0331732 A1Microsoft Technology Licensing, LLC
- Volumetric holographic data storage devices and volumetric holograms30 May 2024US 2024/0176291 A1Holomem Ltd
- Optical Identifier and System for Reading Same11 Apr 2024US 2024/0119964 A1Neursciences LLC
- Optical memory, optical diffraction element, and recording method1 Feb 2024US 2024/0038264 A1Fujikura Ltd.
Most cited
By later US patents
- Methods and apparatus for forward-directed optical scanning instruments1,184US 6,485,413 B1The General Hospital Corporation · 2002
- Fiber optic needle probes for optical coherence tomography imaging722US 6,564,087 B1Massachusetts Institute of Technology · 2003
- Grating based phase control optical delay line535US 6,111,645 AMassachusetts Institute of Technology · 2000
- Interferometeric imaging with a grating based phase control optical delay line475US 6,421,164 B2Massachusetts Institute of Technology · 2002
- Grating based phase control optical delay line383US 6,282,011 B1Massachusetts Institute of Technology · 2001