H02M 5/253
Using discharge tubes only
Official title: using discharge tubes only
H02M5/253 (Using discharge tubes only) appears on 5 US grants and 0 published applications in this corpus.
Search patents in H02M- Granted patents
- 5
- Published applications
- 0
- Assignees
- 5
- Inventors
- 11
- Latest grant
- 25 Jul 1978
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Device for deposition of semi-conductor material25 Jul 1978US 4,102,298 ASiemens Aktiengesellschaft
- Three phase controlling system18 Jul 1978US 4,101,819 AHitachi, Ltd.
- Chopper assisted uninterruptible power supply27 Dec 1977US 4,065,711 AMitsubishi Denki Kabushiki Kaisha
- AC to DC power supply circuit27 Sep 1977US 4,051,425 ATelephone Utilities and Communications Industries, Inc.
- Power control system for single phase induction melting or heating furnace19 Jul 1977US 4,037,044 AAjax Magnethermic Corporation
No published applications in this class yet.
Most cited
By later US patents
- AC to DC power supply circuit45US 4,051,425 ATelephone Utilities and Communications Industries, Inc. · 1977
- Chopper assisted uninterruptible power supply44US 4,065,711 AMitsubishi Denki Kabushiki Kaisha · 1977
- Device for deposition of semi-conductor material13US 4,102,298 ASiemens Aktiengesellschaft · 1978
- Power control system for single phase induction melting or heating furnace7US 4,037,044 AAjax Magnethermic Corporation · 1977
- Three phase controlling system6US 4,101,819 AHitachi, Ltd. · 1978