H01H 2231/042
Briefcase
Official title: Briefcase; Note-book
H01H2231/042 (Briefcase) appears on 69 US grants and 60 published applications in this corpus.
Search patents in H01H- Granted patents
- 69
- Published applications
- 60
- Assignees
- 38
- Inventors
- 135
- Latest grant
- 20 Jun 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 1 | 2 |
| 2003 | 3 | 8 |
| 2004 | 6 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 3 | 4 |
| 2012 | 3 | 4 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 3 | 1 |
| 2016 | 2 | 5 |
| 2017 | 5 | 6 |
| 2018 | 6 | 4 |
| 2019 | 4 | 3 |
| 2020 | 5 | 8 |
| 2021 | 5 | 1 |
| 2022 | 2 | 1 |
| 2023 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Low-profile keyboard20 Jun 2023US 11,681,377 B2Microsoft Technology Licensing, LLC
- Electronic device, waterproof button structure, and waterproof partition20 Jun 2023US 11,682,532 B2Hon Hai Precision Industry Co., Ltd.
- Scissor plate control system and method for slower magnetic force decay31 May 2022US 11,348,746 B2Dell Products L. P.
- Keyswitch structure10 May 2022US 11,328,879 B2Darfon Electronics Corp.
- Keyswitch structure30 Nov 2021US 11,189,442 B2Darfon Electronics Corp.
- Waterproof partition21 Sep 2023US 2023/0298831 A1Hon Hai Precision Industry Co., Ltd.
- Low-profile keyboard17 Feb 2022US 2022/0050531 A1Microsoft Technology Licensing, LLC
- Electronic device, waterproof button structure, and waterproof partition11 Feb 2021US 2021/0043399 A1Hon Hai Precision Industry Co., Ltd.
- Keyswitch structure3 Dec 2020US 2020/0381194 A1Darfon Electronics Corp.
- Keyswitch structure3 Dec 2020US 2020/0381195 A1Darfon Electronics Corp.
Most cited
By later US patents
- Portable information terminal157US 5,646,649 AMitsubishi Denki Kabushiki Kaisha · 1997
- Apparatus with torsionally stressed conductors routed through a hollow articulated hinge85US 4,825,395 AHewlett-Packard Company · 1989
- Body structure for a pocket computer having a fastener with multiple spaced apart elements66US 5,253,142 ACal-Comp Electronics, Inc. · 1993
- Electronic book and method65US 5,810,604 APioneer Publishing · 1998
- Panels with animation and sound48US 6,205,690 B1XS Energy International, Inc. · 2001