G03H 2260/62
Direct etching
G03H2260/62 (Direct etching) appears on 30 US grants and 44 published applications in this corpus.
Search patents in G03H- Granted patents
- 30
- Published applications
- 44
- Assignees
- 32
- Inventors
- 103
- Latest grant
- 13 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 2 |
| 2003 | 3 | 4 |
| 2004 | 2 | 6 |
| 2005 | 3 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 5 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 4 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 3 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 1 | 2 |
| 2021 | 4 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for preparing femtosecond optical filament interference direct writing volume grating/chirped volume grating13 Feb 2024US 11,899,229 B2Chongqing Institute of East China Normal University
- Fabrication method of holographic security label19 Dec 2023US 11,846,888 B2Kaunas University of Technology
- Optically variable film, apparatus and method for making the same23 May 2023US 11,656,396 B2Illinois Tool Works Inc.
- Laser ablation with reduced visual effects28 Sep 2021US 11,130,195 B2Gentex Corporation
- Fabrication of metallic optical metasurfaces6 Apr 2021US 10,968,522 B2Elwha LLC
- System and method for generating holographic optical images in curable material26 Jun 2025US 2025/0208566 A1
- A device and a method for optical engraving of a diffraction grating on a workpiece1 Aug 2024US 2024/0253152 A1Boegli-Gravures S.A.
- Optically variable film, apparatus and method for making the same5 Oct 2023US 2023/0314687 A1Illinois Tool Works Inc.
- Method and apparatus for preparing femtosecond optical filament interference direct writing volume grating/chirped volume grating21 Oct 2021US 2021/0325581 A1Chongqing Institute of East China Normal University
- Fabrication method of holographic security label14 Oct 2021US 2021/0318621 A1Kaunas University of Technology
Most cited
By later US patents
- Laser engraved verification hologram and associated methods169US 5,331,443 ACrown Roll Leaf, Inc. · 1994
- Method and apparatus providing 2-D/3-D optical information storage and retrieval in transparent materials99US 5,761,111 APresident and Fellows of Harvard College · 1998
- Method and apparatus for metal surface process by laser beam23US 5,072,091 AOsakafuji Kogyo Co., Ltd. · 1991
- Optical structure17US 7,199,911 B2Optaglio Limited · 2007
- Production method and device for hologram16US 6,633,419 B2Japan Science and Technology Corporation · 2003