US3515528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block copolymer strippable coatings of butadiene styrene block copolymer containing a fatty acid amide
Assignee: Shell USA Inc
•
Filing: 1965-12-14
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Granted: 1970-06-02
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Expires: 1985-12-14
Abstract
No abstract record available.
Inventors
- 👤 William B Luther
- 👤 Donald L Martinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:28
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; C08; C08K; C08K5/00; C08K5/16; C08K5/20; C09; C09D; C09D153/00; C09D153/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2770609A
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US2770608A
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US2938879A
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US3330796A
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US3104232A
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US3227589A
Cited
US3239478A
Cited
US3251905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |