US2439650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making granules
Assignee: LEHON CO
•
Filing: 1944-01-28
•
Granted: 1948-04-13
•
Expires: 1964-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles W Cuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:21
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1055; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2057677A
Cited
US2215600A
Cited
US2061246A
Cited
US2114692A
Cited
DE692321C
Cited
US2294523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |