US2219776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystallization process
Assignee: Individual
•
Filing: 1938-03-03
•
Granted: 1940-10-29
•
Expires: 1958-03-03
Abstract
No abstract record available.
Inventors
- 👤 Henderson William Noland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:47
CPC Classifications
C; C01; C01D; C01D9/00; C01D9/06; B; B01; B01D; B01D9/00; B01D9/0036; B01D9/005; B01D9/0059; C01B; C01B21/00; C01B21/20; C01B21/38; C01B21/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-10-29 | 1944-04-29 | 1944-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-29 | 1948-04-29 | 1948-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-29 | 1952-04-29 | 1952-10-29 | $7700.00 | Window Closed / Lapsed |