Patent US3077058A successfully refreshed from Google Patents.
US3077058A
Expired / Lapsed
US
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Insulated chamber
Assignee: Universal Oil Products Co
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Filing: 1957-12-30
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Granted: 1963-02-12
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:23
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/141; F16; F16L; F16L59/00; F16L59/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN INSULATING WALL COMPRISING IN COMBINATION A METAL WALL HAVING SPLIT METAL PIN MEMBERS CONNECTED THERETO, A LAYER OF SOFT LIGHT-WEIGHT INSULATING MATERIAL IN CONTACT WITH SAID METAL WALL AND IMPALED BY SAID PIN MEMBERS, A LAYER OF HARD MONOLITHIC REFRACTORY MATERIAL IN CONTINUOUS CONTACT WITH SAID SOFT MATERIAL, SAID SPLIT PIN MEMBERS EXTENDING SUBSTANTIALLY THROUGH AND BEING IMBEDDED IN SAID MONOLITHIC LAYER AND THEREIN BEING ONLY
Claim 2
Dependent Claim
67 words
AN INSULATING WALL COMPRISING IN COMBINATION A METAL WALL HAVING SPLIT METAL PIN MEMBERS CONNECTED THERETO, A LAYER OF SOFT LIGHT-WEIGHT INSULATING MATERIAL IN CONTACT WITH SAID METAL WALL AND IMPALED BY SAID PIN MEMBERS, A LAYER OF HARD MONOLITHIC REFRACTORY MATERIAL IN CONTINUOUS CONTACT WITH SAID SOFT MATERIAL, SAID SPLIT PIN MEMBERS EXTENDING SUBSTANTIALLY THROUGH AND BEING IMBEDDED IN SAID MONOLITHIC LAYER AND THEREIN BEING ONLY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |