Patent US2716593A successfully refreshed from Google Patents.
US2716593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of sulfur trioxide with liquid silicon compounds
Assignee: Honeywell International Inc
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Filing: 1952-12-04
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Granted: 1955-08-30
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Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 Litant Irving
- 👤 Robert V Townend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:33
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
THE METHOD OF STABILIZING MATERIAL OF THE GROUP CONSISTING OF LIQUID SULFUR TRIOXIDE AND OLEUM OF SO3 STRENGTH SUCH THAT SO3 POLYMERS TEND TO FORM, WHICH METHOD COMPRISES INCORPORATING THEREWITH IN AMOUNT SUFFICIENT TO STABILIZE SAID MATERIAL BUT LESS THAN 1% BY WEIGHT OF THE FREE SO3 CONTENT THEREOF, A MONOMERIC COMPOUND OF THE FORMULA X-M-Y, WHEREIN X IS AT LEAST ONE OF THE SUBSTANCES SELECTED FROM THE GROUP CONSISTING OF CHLORINE, FLUORINE, METHYL, AND METHOXY, M IS SELECTED FROM THE GROUP CONSISTING OF THE SILICON ATOM AND THE FULLY X AND Y SUBSTITUTED DISILOXANE NUCLEUS, AND Y IS AT LEAST ONE OF THE SUNSTANCES SELECTED FROM THE GROUP CONSISTING OF CLA, FA, (CH3)B, AND (OCH3),B, A BEING AN INTEGER FROM 0 TO 3 WHICH IS O WHEN M IS THE SILICON ATOM AND B BEING AN INTEGER FROM 0 TO 3 WHICH IS 0, 1 OR 2 WHEN M IS THE DISILOXANE NUCLEUS, THE OTHERWISE UNFILLED VALENCE BONDS OF THE SILICON ATOMS IN THE MOLECULE BEING FILLED BY HYDROGEN ATOMS.
Claim 2
Independent Claim
171 words
THE METHOD OF STABILIZING MATERIAL OF THE GROUP CONSISTING OF LIQUID SULFUR TRIOXIDE AND OLEUM OF SO3 STRENGTH SUCH THAT SO3 POLYMERS TEND TO FORM, WHICH METHOD COMPRISES INCORPORATING THEREWITH IN AMOUNT SUFFICIENT TO STABILIZE SAID MATERIAL BUT LESS THAN 1% BY WEIGHT OF THE FREE SO3 CONTENT THEREOF, A MONOMERIC COMPOUND OF THE FORMULA X-M-Y, WHEREIN X IS AT LEAST ONE OF THE SUBSTANCES SELECTED FROM THE GROUP CONSISTING OF CHLORINE, FLUORINE, METHYL, AND METHOXY, M IS SELECTED FROM THE GROUP CONSISTING OF THE SILICON ATOM AND THE FULLY X AND Y SUBSTITUTED DISILOXANE NUCLEUS, AND Y IS AT LEAST ONE OF THE SUNSTANCES SELECTED FROM THE GROUP CONSISTING OF CLA, FA, (CH3)B, AND (OCH3),B, A BEING AN INTEGER FROM 0 TO 3 WHICH IS O WHEN M IS THE SILICON ATOM AND B BEING AN INTEGER FROM 0 TO 3 WHICH IS 0, 1 OR 2 WHEN M IS THE DISILOXANE NUCLEUS, THE OTHERWISE UNFILLED VALENCE BONDS OF THE SILICON ATOMS IN THE MOLECULE BEING FILLED BY HYDROGEN ATOMS.
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) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |