US2853361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for obtaining intimate contact between finely divided substances and gases
Assignee: Individual
•
Filing: 1953-07-30
•
Granted: 1958-09-23
•
Expires: 1973-07-30
Abstract
No abstract record available.
Inventors
- 👤 Petri B Bryk
- 👤 Jorma B Honkasalo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2231424A
Cited
US2364145A
Cited
US2337684A
Cited
US2582710A
Cited
US2582712A
Cited
US2582711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |