US2516047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable curable polyorganosiloxane compositions
Assignee: AT&T Inc
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Filing: 1945-11-15
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Granted: 1950-07-18
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Expires: 1965-11-15
Abstract
No abstract record available.
Inventors
- 👤 Coste John B De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K13/00; C08K13/02; C08K3/00; C08K3/18; C08K5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A COMPOSITION COMPRISING A HEAT-CURABLE POLYORGANOSILOXANE, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF LEAD COMPOUND CURING CATALYSTS AND COBALT COMPOUND CURING CATALYSTS, AND A CATECHOL AS A STABLIZER AGAINST SETTING DURING STORAGE, SAID CATECHOL BEING SELECTED FROM THE GROUP CONSISTING OF PYROCATECHOL AND SUBSTITUTED PYROCATECHOLS THE SUBSTITUENTS OF WHICH ARE ALIPHATIC HYDROCARBON RADICALS, THE ORGANO SUBSTITUENTS ON THE SILICON ATOMS OF SAID POLYORGANOSILOXANE BEING HYDROCARBON SUBSTITUENTS AND THE NUMBER OF SAID HYDROCARBON SUBSTITUENTS PER SILICON ATOM BEING MORE THAN ONE BUT LESS THAN TWO.
Claim 2
Dependent Claim
85 words
A COMPOSITION COMPRISING A HEAT-CURABLE POLYORGANOSILOXANE, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF LEAD COMPOUND CURING CATALYSTS AND COBALT COMPOUND CURING CATALYSTS, AND A CATECHOL AS A STABLIZER AGAINST SETTING DURING STORAGE, SAID CATECHOL BEING SELECTED FROM THE GROUP CONSISTING OF PYROCATECHOL AND SUBSTITUTED PYROCATECHOLS THE SUBSTITUENTS OF WHICH ARE ALIPHATIC HYDROCARBON RADICALS, THE ORGANO SUBSTITUENTS ON THE SILICON ATOMS OF SAID POLYORGANOSILOXANE BEING HYDROCARBON SUBSTITUENTS AND THE NUMBER OF SAID HYDROCARBON SUBSTITUENTS PER SILICON ATOM BEING MORE THAN ONE BUT LESS THAN TWO.
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |