Patent US4587485A successfully refreshed from Google Patents.
US2804398A
Expired / Lapsed
US
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Method of preserving and fireproofing a structural member and resultant article
Assignee: Southwestern Petroleum Co Inc
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Filing: 1954-11-22
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Granted: 1957-08-27
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Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Robert M Hooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:42
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C09D5/185; B; B05; B05D; B05D7/00; B05D7/06; B05D7/08; B27; B27K; B27K5/00; B27K5/0095; C09D15/00; B27K2240/00; B27K2240/30; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/907; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T428/31851
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A STRUCTURAL UNIT COMPRISING A STRUCTURAL MEMBER, PRESERVATIVE MATERIAL INCLUDING A PETROLEUM OIL COMBINED WITH SAID STRUCTURAL MEMBER, AND A COATING COVERING SAID STRUCTURAL MEMBER AND SAID PRESERVATIVE MATERIAL FOR INHIBITING DETERIORATION AND DESTRUCTION BY FIRE OF SAID STRUCTURAL MEMBER, SAID COATING COMPSRISING A THERMOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM SILICATE, POLYVINYL ACETATE RESIN, CHLORINATED RUBBERCHLORINATED PARAFFIN, AND CHLORINATED RUBBER-ALKYLD RESIN, SAID COATING HAVING THE PROPERTY OF BECOMING SOFT AND ELASTIC UNDER HEAT, SAID PRESERVATIVE MATERIAL INCLUDING A PETROLEUM OIL HAVING THE PROPERTY OF PRODUCING AN EXCESSIVE AMOUNT OF GAS AS THE COATING SOFTENS DUE TO HEAT TO CAUSE EXPANSION OF SAID COATING BY THE FORMED GAS AWAY FROM SAID STRUCTURAL MEMBER TO FORM AN INSULATING CHAMBER OVER SAID STRUCTURAL MEMBER.
Claim 2
Dependent Claim
124 words
A STRUCTURAL UNIT COMPRISING A STRUCTURAL MEMBER, PRESERVATIVE MATERIAL INCLUDING A PETROLEUM OIL COMBINED WITH SAID STRUCTURAL MEMBER, AND A COATING COVERING SAID STRUCTURAL MEMBER AND SAID PRESERVATIVE MATERIAL FOR INHIBITING DETERIORATION AND DESTRUCTION BY FIRE OF SAID STRUCTURAL MEMBER, SAID COATING COMPSRISING A THERMOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM SILICATE, POLYVINYL ACETATE RESIN, CHLORINATED RUBBERCHLORINATED PARAFFIN, AND CHLORINATED RUBBER-ALKYLD RESIN, SAID COATING HAVING THE PROPERTY OF BECOMING SOFT AND ELASTIC UNDER HEAT, SAID PRESERVATIVE MATERIAL INCLUDING A PETROLEUM OIL HAVING THE PROPERTY OF PRODUCING AN EXCESSIVE AMOUNT OF GAS AS THE COATING SOFTENS DUE TO HEAT TO CAUSE EXPANSION OF SAID COATING BY THE FORMED GAS AWAY FROM SAID STRUCTURAL MEMBER TO FORM AN INSULATING CHAMBER OVER SAID STRUCTURAL MEMBER.
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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) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |