Patent US2345013A successfully refreshed from Google Patents.
US2345013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for conducting exothermic polymerization reactions
Assignee: United Gas Improvement Co
•
Filing: 1939-06-23
•
Granted: 1944-03-28
•
Expires: 1959-06-23
Abstract
No abstract record available.
Inventors
- 👤 Frank J Soday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:44
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/24; B29C41/26; B01; B01J; B01J10/00; B01J10/02; B01J19/00; B01J19/18; B01J19/22; B01J19/28; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00087; B01J2219/0009; B01J2219/00094; B01J2219/00159; B01J2219/00182
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1947-03-28 | 1947-09-27 | 1948-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-28 | 1951-09-27 | 1952-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-28 | 1955-09-27 | 1956-03-28 | $7700.00 | Window Closed / Lapsed |