Patent US1785530A successfully refreshed from Google Patents.
US1785530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of crystallization
Assignee: Individual
•
Filing: 1928-01-18
•
Granted: 1930-12-16
•
Expires: 1948-01-18
Abstract
No abstract record available.
Inventors
- 👤 Joshua R Ray
- 👤 Ray Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:22
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/02; B; B01; B01D; B01D1/00
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) | 1933-12-15 | 1934-06-16 | 1934-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-12-15 | 1938-06-16 | 1938-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-12-15 | 1942-06-16 | 1942-12-16 | $7700.00 | Window Closed / Lapsed |