US2814601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane adhesive and pressure-sensitive adhesive tape containing same
Assignee: Dow Silicones Corp
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Filing: 1954-04-29
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Granted: 1957-11-26
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Expires: 1974-04-29
Abstract
No abstract record available.
Inventors
- 👤 Chester C Currie
- 👤 Joseph W Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
C; C09; C09J; C09J183/00; C09J183/04; C08; C08L; C08L83/00; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; C08L83/04; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A COMPOSITION OF MATTER COMPOSED ESSENTIALLY OF (1) FROM 40 TO 75% BY WEIGHT OF A BENZENE SOLUBLE RESIN COPOLYMER OF SIO2 UNITS AND R3SIO5 UNITS WHERE R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, PROPYL, VINYL AND PHENYL RADICALS, AT LEAST 90% OF THE TOTAL R RADICALS BEING ALIPHATIC AND IN WHICH COPOLYMER THE RATIO OF R3SIO5 UNITS TO SIO2 UNITS IS FROM 0.6:1 TO 0.9:1 INCLUSIVE AND (2) FROM 25 TO 60% BY WEIGHT OF A HYDROXYL END-BLOCKED DIORGANOPOLYSILOXANE FLUID OF FROM 5,000 TO LESS THAN 1,000,000 CS. VISCOSITY AT 25*C. IN WHICH FLUID THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, VINYL AND PHENYL RADICALS, AT LEAST 75% OF THE TOTAL NUMBER OF ORGANIC RADICALS BEING ALIPHATIC.
Claim 2
Dependent Claim
126 words
A COMPOSITION OF MATTER COMPOSED ESSENTIALLY OF (1) FROM 40 TO 75% BY WEIGHT OF A BENZENE SOLUBLE RESIN COPOLYMER OF SIO2 UNITS AND R3SIO5 UNITS WHERE R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, PROPYL, VINYL AND PHENYL RADICALS, AT LEAST 90% OF THE TOTAL R RADICALS BEING ALIPHATIC AND IN WHICH COPOLYMER THE RATIO OF R3SIO5 UNITS TO SIO2 UNITS IS FROM 0.6:1 TO 0.9:1 INCLUSIVE AND (2) FROM 25 TO 60% BY WEIGHT OF A HYDROXYL END-BLOCKED DIORGANOPOLYSILOXANE FLUID OF FROM 5,000 TO LESS THAN 1,000,000 CS. VISCOSITY AT 25*C. IN WHICH FLUID THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, VINYL AND PHENYL RADICALS, AT LEAST 75% OF THE TOTAL NUMBER OF ORGANIC RADICALS BEING ALIPHATIC.
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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |