G05D 23/1909
Whose output amplitude can only take two discrete values
Official title: {whose output amplitude can only take two discrete values}
G05D23/1909 (Whose output amplitude can only take two discrete values) appears on 257 US grants and 77 published applications in this corpus.
Search patents in G05D- Granted patents
- 257
- Published applications
- 77
- Assignees
- 163
- Inventors
- 376
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 7 |
| 2002 | 15 | 5 |
| 2003 | 8 | 6 |
| 2004 | 4 | 6 |
| 2005 | 3 | 8 |
| 2006 | 7 | 5 |
| 2007 | 2 | 9 |
| 2008 | 6 | 2 |
| 2009 | 2 | 1 |
| 2010 | 3 | 5 |
| 2011 | 3 | 6 |
| 2012 | 6 | 2 |
| 2013 | 3 | 2 |
| 2014 | 2 | 2 |
| 2015 | 3 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 1 |
| 2024 | 2 | 4 |
| 2025 | 3 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Thermal protection apparatus for a secure electronic appliance, in particular a postage meter190US 5,659,454 ANeopost Industrie · 1997
- Energy-conserving thermostat and method188US 5,244,146 AHomebrain, Inc. · 1993
- Temperature controlled cartridge heater117US 3,947,656 AFast Heat Element Manufacturing Co., Inc. · 1976
- Temperature controller for a microwave heating system116US 4,228,809 ARCA Corporation · 1980