US2467470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of spherical particles
Assignee: Universal Oil Products Co
•
Filing: 1945-05-25
•
Granted: 1949-04-19
•
Expires: 1965-05-25
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Gerhold
- 👤 Lev A Mekler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:31
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/02; B01J2/04; B01D; B01D1/00; B01D1/16; B01D1/18; B01F; B01F33/00; B01F33/80; B01F33/82; B01F33/821; B01J21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1294909A
Cited
DE422803C
Cited
US1671866A
Cited
US1853682A
Cited
US2043378A
Cited
US2152423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |