US3468986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a solid particulate material
Assignee: DAVID J WATANABE
•
Filing: 1966-11-15
•
Granted: 1969-09-23
•
Expires: 1986-11-15
Abstract
No abstract record available.
Inventors
- 👤 David J Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:20
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/40; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306060A
Cited
US1378084A
Cited
US2652386A
Cited
GB715099A
Cited
US3042970A
Cited
US3334159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |