H03K 2217/956
Negative resistance
Official title: Negative resistance, e.g. LC inductive proximity switches
H03K2217/956 (Negative resistance) appears on 7 US grants and 4 published applications in this corpus.
Search patents in H03K- Granted patents
- 7
- Published applications
- 4
- Assignees
- 8
- Inventors
- 13
- Latest grant
- 13 Sep 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
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| 2000 | 1 | 0 |
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| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Proximity sensor13 Sep 2022US 11,444,622 B2Sony Semiconductor Solutions Corporation
- Diagnostic element for validation of bolt detection of a guard locking switch in a static state10 May 2022US 11,328,548 B2Rockwell Automation Technologies, Inc.
- Compensation of changes in a resonant phase sensing system including a resistive-inductive-capacitive sensor17 Aug 2021US 11,092,657 B2Cirrus Logic, Inc.
- Diagnostic element for validation of bolt detection of a guard locking switch in a static state29 Sep 2020US 10,789,798 B1Rockwell Automation Technologies, Inc.
- Proximity sensor and method of changing detection distance7 Jul 2020US 10,704,928 B2OMRON Corporation
- Proximity sensor20 Jan 2022US 2022/0021386 A1Sony Semiconductor Solutions Corporation
- Diagnostic element for validation of bolt detection of a guard locking switch in a static state31 Dec 2020US 2020/0410800 A1Rockwell Automation Technologies, Inc.
- Compensation of changes in a resonant phase sensing system including a resistive-inductive-capacitive sensor3 Oct 2019US 2019/0302193 A1Cirrus Logic International Semiconductor Ltd.
- Proximity sensor and method of changing detection distance1 Aug 2019US 2019/0234765 A1OMRON Corporation
Most cited
By later US patents
- Compensation of changes in a resonant phase sensing system including a resistive-inductive-capacitive sensor16US 11,092,657 B2Cirrus Logic, Inc. · 2021
- Oscillator with a temperature compensated oscillating coil10US 4,509,023 AContrinex S.A. · 1985
- Temperature stabilized oscillator and proximity switch containing the oscillator6US 6,031,430 AOptosys SA · 2000