US3291760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of condensation products containing silicon-nitrogen linkages
Assignee: OI Glass Inc
•
Filing: 1965-07-01
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Granted: 1966-12-13
•
Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 John W Bayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:14
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60; C08G77/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF PREPARING A CONDENSATION PRODUCT WHICH COMPRISES HEATING A MIXTURE OF THE FOLLOWING REACTANTS IN THE STATED PROPORTIONS AT A REACTION TEMPERATURE WITHIN THE RANGE OF FROM 100*C. TO 400*C. IN THE PRESENCE OF A CATALYLIC AMOUNT OF A STRONGLY BASIC CATALYST AT LEAST UNTIL THE EVOLUTION OF HYDROGEN HAS SUBSTANTIALLY COMPLETELY SUBSIDED: (1) AT LEAST ONE DI-(ORGANO) SILANE REPRESENTED BY THE GENERAL FORMULA
Claim 2
Independent Claim
66 words
THE METHOD OF PREPARING A CONDENSATION PRODUCT WHICH COMPRISES HEATING A MIXTURE OF THE FOLLOWING REACTANTS IN THE STATED PROPORTIONS AT A REACTION TEMPERATURE WITHIN THE RANGE OF FROM 100*C. TO 400*C. IN THE PRESENCE OF A CATALYLIC AMOUNT OF A STRONGLY BASIC CATALYST AT LEAST UNTIL THE EVOLUTION OF HYDROGEN HAS SUBSTANTIALLY COMPLETELY SUBSIDED: (1) AT LEAST ONE DI-(ORGANO) SILANE REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
US3230242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |