G04C 13/11
With rotating armature
Official title: with rotating armature
G04C13/11 (With rotating armature) appears on 108 US grants and 4 published applications in this corpus.
Search patents in G04C- Granted patents
- 108
- Published applications
- 4
- Assignees
- 40
- Inventors
- 138
- Latest grant
- 23 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 12 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 3 | 0 |
| 1982 | 9 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Step motor drive device and circuit23 Aug 2022US 11,422,511 B2Citizen Watch Co., Ltd.
- Timepiece movement and timepiece17 May 2022US 11,334,031 B2Seiko Instruments Inc.
- Electronic watch25 Aug 2020US 10,754,299 B2Citizen Watch Co., Ltd.
- Timepiece device6 Dec 2005US 6,973,010 B1Seiko Epson Corporation
- Two-pole step motor for timepiece10 Aug 2004US 6,774,513 B2Citizen Watch Co., Ltd.
- Step motor drive device and circuit22 Oct 2020US 2020/0333749 A1Citizen Watch Co., Ltd.
- Timepiece movement and timepiece30 Apr 2020US 2020/0133205 A1Seiko Instruments Inc.
- Electronic watch7 Feb 2019US 2019/0041804 A1Citizen Watch Co., Ltd.
- Two-pole step motor for timepiece23 Oct 2003US 2003/0197434 A1Citizen Watch Co., Ltd.
Most cited
By later US patents
- Bipolar stepping motor rotor with drive pinion and method of manufacture95US 4,700,091 ATimex Corporation · 1987
- Multiphase motor with facially magnetized rotor having N/2 pairs of poles per face59US 4,680,494 A1987
- Permanent magnet rotor assembly for electro-mechanical transducer40US 4,206,379 ACitizen Watch Co., Ltd. · 1980
- Chronographic watch37US 4,364,669 AEbauches S.A. · 1982
- Electromagnetic motor rotatable in either direction27US 4,371,821 AEbauches S.A. · 1983