US3764266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump for producing a vacuum free of hydrogen
Assignee: Toshiba Corp
•
Filing: 1971-06-07
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Granted: 1973-10-09
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Expires: 1991-06-07
Abstract
Abstract A PUMP FOR PRODUCING A VACUUM FREE OF HYDROGEN COMPRISING AN INCANDESCENT FILAMENT FOR DISSOICATING HYDROGEN MOLECULARS INTO HYDROGEN ATOMS; AN OXIDIZING AGENT DISPOSED NEAR THE FILAMENT AND HAVING AT LEAST ITS SURFACE FORMED OF METAL OXIDES SO AS TO OXIDIZE MAINLY SAID DISSOCIATED HYDROGEN ATOMS INTO H2O; AND AN EXHAUST MEANS FOR DRAWING OUT VAPORS OF H2O PRODUCED ON SAID OXIDIZING AGENT.
Inventors
- 👤 Y Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
B; B01; B01D; B01D8/00; F; F04; F04B; F04B37/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |