US2701780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing synthetic drying oils
Assignee: Standard Oil Development Co
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Filing: 1951-10-22
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Granted: 1955-02-08
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Expires: 1971-10-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Nelson
- 👤 Jr John F Mckay
- 👤 Lester M Welch
- 👤 Donald F Koenecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:53
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/10; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945; Y10T; Y10T428/00; Y10T428/26; Y10T428/266; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A STRUCTURE COMPRISING TWO METAL LAYERS HAVING AN ADHESIVE FILM THEREBETWEEN COMPRISING A HARD, RESINOUS PRODUCT OBTAINED BY HEATING AN OILY COPOLYMER OF BUTADIENE AND STYRENE TO A TEMPERATURE BETWEEN 550* AND 5000* F. FOR FROM THREE MINUTES TO LESS THAN 1 SECOND, IN THE ABSENCE OF AIR, SAID COPOLYMER HAVING BEEN PREPARED BY COPOLYMERIZING 75 TO 85* BUTADIENE-1,3 AND 25 TO 15% STYRENE IN THE PRESENCE OF SODIUM AS A CATALYST AT A TEMPERATURE BETWEEN 20* AND 100* C.
References Cited (Backward Citations)
FR676508A
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US2237623A
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US2317858A
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US2252333A
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US2264811A
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US2473538A
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US2484705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |