US2491732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of vaporizing hydrogen peroxide
Assignee: EIDP Inc
•
Filing: 1946-05-17
•
Granted: 1949-12-20
•
Expires: 1966-05-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred T Hawkinson
- 👤 Bruce B Gralow
- 👤 Harold E May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/013
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1013791A
Cited
US1213921A
Cited
US1323075A
Cited
US1851961A
Cited
US1854327A
Cited
US2242466A
Cited
US2298064A
Cited
US2336493A
Cited
US2368806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |