US3699072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone elastomer with unprimed adhesion
Assignee: Dow Silicones Corp
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Filing: 1971-06-24
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Granted: 1972-10-17
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Expires: 1991-06-24
Abstract
Abstract A COMPOSITION OF A VINYLDIORGANOSILOXY ENDBLOCKED POLYDIMETHYLSILOXANE AND A MIXTURE OF AN ORGANOSILOXANE HAVING 5 TO 20 SILICON ATOMS PER MOLECULE AND AN AVERAGE OF AT LEAST THREE SILICON-BONDED HYDROGEN ATOMS PER MOLECULE AND A MODIFIED ORGANOSILOXANE HAVING 6 TO 21 SILICON ATOMS PER MOLECULE, AN AVERAGE OF AT LEAST TWO SILICON-BONDED HYDROGEN ATOMS PER MOLECULE AND AN AVERAGE OF AT LEAST ONE UNIT OF (RO)3SI(CH2)X(CH3)SIO, (RO)3SI(CH2)X(CH3)2SIO0.5 AND MIXTURES THEREOF WHERE R IS METHYL, ETHYL OR CH3-CO- AND X IS 2 OR 3 IS CURABLE TO AN ELASTOMER WHICH HAS IMPROVED UNPRIMED ADHESION TO SUBSTANCES, PARTICULARLY METAL SUBSTRATES.
Inventors
- 👤 William H Clark
- 👤 William R Hays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:07
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08G; C08G77/00; C08G77/04; C08G77/045; C08G77/12; C08G77/14; C08G77/18; C08G77/20; C08G77/70
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |