Patent US3140934A successfully refreshed from Google Patents.
US3140934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perchloryl fluoride purification process
Assignee: Pennwalt Corp
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Filing: 1961-03-13
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Granted: 1964-07-14
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Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry C Mandell
- 👤 Barth-Wehrenalp Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:54
CPC Classifications
A; A62; A62B; A62B21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD FOR RENDERING BREATHABLE AIR CONTAMINATED WITH PERCHLORYL FLUORIDE WHICH COMPRISES INTIMATELY CONTACTING AIR CONTAINING PERCHLORYL FLUORIDME AS AN IMPURITY THEREIN WITH AN ADSORBENT CONSISTING OF A SYNTHETIC ALKALI METAL ALUMINA SILICATE CHARACTERIZED BY A THREE DIMENSIONAL NETWORK WITH MUTUALLY CONNECTED INTRA-CRYSTALLINE VOIDS ACCESSIBLE THROUGH OPENINGS OF AT LEAST 5 ANGSTROMS IN DIAMETER.
Claim 2
Independent Claim
54 words
A METHOD FOR RENDERING BREATHABLE AIR CONTAMINATED WITH PERCHLORYL FLUORIDE WHICH COMPRISES INTIMATELY CONTACTING AIR CONTAINING PERCHLORYL FLUORIDME AS AN IMPURITY THEREIN WITH AN ADSORBENT CONSISTING OF A SYNTHETIC ALKALI METAL ALUMINA SILICATE CHARACTERIZED BY A THREE DIMENSIONAL NETWORK WITH MUTUALLY CONNECTED INTRA-CRYSTALLINE VOIDS ACCESSIBLE THROUGH OPENINGS OF AT LEAST 5 ANGSTROMS IN DIAMETER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |