US2551160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal insulation of vessels
Assignee: Phillips Petroleum Co
•
Filing: 1945-02-05
•
Granted: 1951-05-01
•
Expires: 1965-02-05
Abstract
No abstract record available.
Inventors
- 👤 Alexander R Rehrig
- 👤 Strunk Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/008; B01J19/00; B01J19/0006; B01J19/002; B01J8/02; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00477; B01J2208/00495; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/0015; B01J2219/00155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1090874A
Cited
US1286135A
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US1670557A
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US2124573A
Cited
US2212835A
Cited
US2430652A
Cited
US2398546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |