US3459693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polystyrene latex agglomeration
Assignee: Shell USA Inc
•
Filing: 1966-07-18
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Granted: 1969-08-05
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Walter M Halper
- 👤 Roger F York
- 👤 Fred Dudley Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:12
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/14; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/936
Claims Analysis
Total Claims: 0
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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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |