G11B 7/00552
Involving colour change media
Official title: {involving colour change media}
G11B7/00552 (Involving colour change media) appears on 30 US grants and 8 published applications in this corpus.
Search patents in G11B- Granted patents
- 30
- Published applications
- 8
- Assignees
- 21
- Inventors
- 59
- Latest grant
- 16 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Drawing method, erasing method, and drawing apparatus16 Aug 2022US 11,413,878 B2Sony Corporation
- Information recording device and data erasing method5 May 2020US 10,643,650 B2Panasonic Intellectual Property Management Co., Ltd.
- Photochromic composite material31 Dec 2013US 8,617,435 B2Centre National de la Recherche Scientifique (CNRS)
- Optical recording medium, erasure apparatus and erasure method thereof13 Dec 2011US 8,077,589 B2Empire Technology Development LLC
- Information recording and retrieval method, and its apparatus26 Oct 2010US 7,821,884 B2Hitachi, Ltd.
- Drawing method, erasing method, and drawing apparatus2 Dec 2021US 2021/0370688 A1Sony Corporation
- Information recording device and data erasing method12 Sep 2019US 2019/0279676 A1Panasonic Intellectual Property Management Co., Ltd.
- Photochromic composite material9 Feb 2012US 2012/0032123 A1Centre National de la Recherche Scientifique (CNRS)
- Optical recording medium, erasure apparatus and erasure method thereof30 Sep 2010US 2010/0246360 A1Empire Technology Development LLC
- Information recording and retrieval method, and its apparatus11 Sep 2008US 2008/0219109 A1Hitachi, Ltd.
Most cited
By later US patents
- Photochromic fluorescent proteins and optical memory storage devices based on fluorescent proteins65US 6,046,925 AThe Regents of the University of California · 2000
- Oriented biological material for optical information storage and processing31US 5,346,789 ACornell Research Foundation, Inc. · 1994
- Optical storage system26US 6,154,432 AYenploy Pty Ltd. · 2000
- Device for reversible optical data storage using polymeric liquid crystals25US 5,024,784 ARohm GmbH Chemische Fabrik · 1991
- Polymeric photo-chromic composition21US 5,936,878 AOMD Devices LLC · 1999