Patent US2731375A successfully refreshed from Google Patents.
US2731375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal building material
Assignee: Midland Chemical Corp
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Filing: 1953-08-19
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Granted: 1956-01-17
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Expires: 1973-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:24
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/64; E04B1/642; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31656; Y10T442/00; Y10T442/50; Y10T442/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AS A NEW ARTICLE OF MANUFACTURE, METAL BUILDING MATERIAL COMPRISING A METAL SHEET, A LAYER OF BITUMINOUSCARRYING FIBROUS MATERIAL COVERING AND BONDED TO A SURFACE OF THE METAL SHEET, AND AN OUTER, WEATHERPROOFING LAYER SELF-ADHERED TO THE SURFACE OF THE FIBROUS LAYER REMOVED FROM TEH METAL SHEET AND FORMED BY DEPOSITING ON SAID FIBROUS LAYER SURFACE A BLEND CONSISTING OF (A) A LIQUID, RESINOUS CONDENSATE OF COMPONENTS CONSISTING ESSENTIALLY OF A POLYHYDRIC ALCOHOL AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN ALPHAUNSATURATED-ALPHA, BETA-DICARBOXYLIC ACIDS AND ANHYDRIDES THEREOF WITH (B) FROM 5 TO 50 PARTS BY WEIGHT OF A MONOVINYLPYRIDINE PER 100 PARTS OF THE CONDENSATE, AND CURING THE BLEND ON THE FIBROUS LAYER TO SET IT IN HARD, INFUSIBLE, INSOLUBLE CONDITION.
Claim 2
Dependent Claim
123 words
AS A NEW ARTICLE OF MANUFACTURE, METAL BUILDING MATERIAL COMPRISING A METAL SHEET, A LAYER OF BITUMINOUSCARRYING FIBROUS MATERIAL COVERING AND BONDED TO A SURFACE OF THE METAL SHEET, AND AN OUTER, WEATHERPROOFING LAYER SELF-ADHERED TO THE SURFACE OF THE FIBROUS LAYER REMOVED FROM TEH METAL SHEET AND FORMED BY DEPOSITING ON SAID FIBROUS LAYER SURFACE A BLEND CONSISTING OF (A) A LIQUID, RESINOUS CONDENSATE OF COMPONENTS CONSISTING ESSENTIALLY OF A POLYHYDRIC ALCOHOL AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN ALPHAUNSATURATED-ALPHA, BETA-DICARBOXYLIC ACIDS AND ANHYDRIDES THEREOF WITH (B) FROM 5 TO 50 PARTS BY WEIGHT OF A MONOVINYLPYRIDINE PER 100 PARTS OF THE CONDENSATE, AND CURING THE BLEND ON THE FIBROUS LAYER TO SET IT IN HARD, INFUSIBLE, INSOLUBLE CONDITION.
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |