US3464850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous organic material bonded with a block copolymer
Assignee: Shell USA Inc
•
Filing: 1966-04-25
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Granted: 1969-09-02
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Walter R Haefele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/356; D06M15/3562; C; C08; C08F; C08F8/00; C08F8/04; C08L; C08L53/00; C08L53/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31931; Y10T428/31935; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2539301A
Cited
US2972593A
Cited
US2836693A
Cited
US3085919A
Cited
US3210333A
Cited
US3299174A
Cited
US3328263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |