G03H 2001/0016
Covert holograms or holobjects requiring additional knowledge to be perceived
Official title: {Covert holograms or holobjects requiring additional knowledge to be perceived, e.g. holobject reconstructed only under IR illumination}
G03H2001/0016 (Covert holograms or holobjects requiring additional knowledge to be perceived) appears on 122 US grants and 146 published applications in this corpus.
Search patents in G03H- Granted patents
- 122
- Published applications
- 146
- Assignees
- 93
- Inventors
- 332
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 5 |
| 2003 | 3 | 11 |
| 2004 | 5 | 6 |
| 2005 | 8 | 10 |
| 2006 | 5 | 6 |
| 2007 | 4 | 15 |
| 2008 | 2 | 9 |
| 2009 | 6 | 13 |
| 2010 | 4 | 10 |
| 2011 | 4 | 2 |
| 2012 | 8 | 12 |
| 2013 | 8 | 7 |
| 2014 | 5 | 3 |
| 2015 | 4 | 5 |
| 2016 | 1 | 2 |
| 2017 | 7 | 2 |
| 2018 | 3 | 1 |
| 2019 | 0 | 6 |
| 2020 | 3 | 5 |
| 2021 | 0 | 4 |
| 2022 | 1 | 2 |
| 2023 | 4 | 5 |
| 2024 | 3 | 3 |
| 2025 | 1 | 1 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical security device4 Aug 2026US 12,697,832 B2
- Tagging and authentication of articles using a holographic interference pattern21 Apr 2026US 12,607,960 B2Ballydel Technologies, Inc.
- Continuous authentication for a real time hologram7 Apr 2026US 12,596,782 B2International Business Machines Corporation
- Humidity sensitive nano-photonics and manufacturing method thereof31 Mar 2026US 12,591,079 B2Postech Academy-Industry Foundation
- Display panel23 Dec 2025US 12,504,715 B2Iq Structures S.R.O.
- Hologram reading device and hologram reading method1 May 2025US 2025/0138478 A1Electronics and Telecommunications Research Institute
- Humidity sensitive nano-photonics and manufacturing method thereof18 Apr 2024US 2024/0125974 A1Postech Academy-Industry Foundation
- Continuous authentication for a real time hologram29 Feb 2024US 2024/0070255 A1International Business Machines Corporation
- Tagging and authentication of articles22 Feb 2024US 2024/0061375 A1Ballydel Technologies, Inc.
- Hologram color designation system and hologram color designation method based on dithering mask14 Dec 2023US 2023/0400810 A1Ulsan National Institute of Science and Technology (UNIST)
Most cited
By later US patents
- Anticounterfeiting method and device utilizing holograms and pseudorandom dot patterns252US 5,396,559 A1995
- Information-recorded media and methods for reading the information159US 5,856,048 ADai Nippon Printing Co.Ltd. · 1999
- Document with an optical diffraction safety element103US 4,984,824 ALGZ Landis & Gyr Zug AG · 1991
- Holographic labeling and reading machine for authentication and security applications101US 5,920,058 A1999
- Optical recording method having two degrees of reflectivity and a diffraction grating or hologram formed integrally thereon and process for making it99US 5,138,604 ADai Nippon Insatsu Kabushiki Kaisha · 1992