US3158667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a plastic spray coated floating roof
Assignee: Chicago Bridge and Iron Co
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Filing: 1961-05-10
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Granted: 1964-11-24
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Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Michaels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B32; B32B; B32B27/00; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2031/00; B29L2031/56; B29L2031/565; B29L2031/712; B29L2031/7126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF FORMING A FLOATING ROOF IN PLACE WITHIN A VESSEL FOR THE STORAGE OF VOLATILE LIQUIDS COMPRISING THE STEPS OF SECURING A SHEET OF A THIN MATERIAL IN A SUBSTANTIALLY HORIZONTAL POSITION COVERING SUBSTANTIALLY THE ENTIRE CROSS-SECTIONAL AREA OF SAID VESSEL, SECURING AN UPSTANDING RIM SEAL TO THE EDGE OF SAIDSHEET ADJACENT THE WALL OF SAID VESSEL TO FORM A BUYANT STURCTURE, COATING SAID SHEET AND SAID RIM SEAL WITH A LAYER OF A POLYMERIZABLE PLASTIC MATERIAL WHICH IN ITS POLYMERIZED FORM IS RELATIVELY LIGHT AND UNAFFECTED BY CONTACT WITH SAID VOLATILE LIQUIDS, AND POLYMERIZING SAID PLASTIC MATERIAL.
Claim 2
Independent Claim
100 words
THE METHOD OF FORMING A FLOATING ROOF IN PLACE WITHIN A VESSEL FOR THE STORAGE OF VOLATILE LIQUIDS COMPRISING THE STEPS OF SECURING A SHEET OF A THIN MATERIAL IN A SUBSTANTIALLY HORIZONTAL POSITION COVERING SUBSTANTIALLY THE ENTIRE CROSS-SECTIONAL AREA OF SAID VESSEL, SECURING AN UPSTANDING RIM SEAL TO THE EDGE OF SAIDSHEET ADJACENT THE WALL OF SAID VESSEL TO FORM A BUYANT STURCTURE, COATING SAID SHEET AND SAID RIM SEAL WITH A LAYER OF A POLYMERIZABLE PLASTIC MATERIAL WHICH IN ITS POLYMERIZED FORM IS RELATIVELY LIGHT AND UNAFFECTED BY CONTACT WITH SAID VOLATILE LIQUIDS, AND POLYMERIZING SAID PLASTIC MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |