Patent US3094447A successfully refreshed from Google Patents.
US3094447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an insulated roof
Assignee: Beazer East Inc
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Filing: 1960-11-14
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Granted: 1963-06-18
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Merle D Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:51
CPC Classifications
E; E04; E04D; E04D11/00; E04D11/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A METHOD OF MAKING A BUILT-UP ROOF WHICH COMPRISES ALDHERING A SHEET OF FELT TO A SHEET OF FOAM POLYSTYRENE BY APPLYING THERETO A BITUMINOUS CEMENT AT A LOW TEMPERATURE OF 150-180*F. AS AN ADHESIVE TO PROVIDE A LAMINATE, SECURING SAID LAMINATE TO THE DECK OF A ROOF WITH THE FELT AS THE UPPER LAYER, AND THEREAFTER APPLYING ALTERNATE UPPER LAYERS OF BITUMINOUS MATERIAL AND FELT WITH THE BITUMINOUS MATERIAL AT A HIGHER TEMPERATURE OF ABOUT 400*F.
Claim 2
Independent Claim
77 words
A METHOD OF MAKING A BUILT-UP ROOF WHICH COMPRISES ALDHERING A SHEET OF FELT TO A SHEET OF FOAM POLYSTYRENE BY APPLYING THERETO A BITUMINOUS CEMENT AT A LOW TEMPERATURE OF 150-180*F. AS AN ADHESIVE TO PROVIDE A LAMINATE, SECURING SAID LAMINATE TO THE DECK OF A ROOF WITH THE FELT AS THE UPPER LAYER, AND THEREAFTER APPLYING ALTERNATE UPPER LAYERS OF BITUMINOUS MATERIAL AND FELT WITH THE BITUMINOUS MATERIAL AT A HIGHER TEMPERATURE OF ABOUT 400*F.
Claim 3
Dependent Claim
86 words
AN INSULATED BUILT-UP ROOF PRODUCED BY APPLYING TO ONE OF THE SHEETS OF FELT AND OF FOAM POLYSTYRENE A BITUMEN CEMENT AT A LOW TEMPERATURE OF 150-180*F. AS AN ADHESIVE, PRESSING SAID SHEETS TOGETHER TO FORM A LAMINATE, APPLYING SAID LAMINATE TO THE DECK OF A ROOF SO THAT THE FELT IS THE UPPER LAYER, AND THEREAFTER ALTERNATELY APPLYING UPPER LAYERS OF BITUMINOUS MATERIAL AND FELT THERETO WITH THE BITUMINOUS MATERIAL AT A HIGHER TEMPERATURE OF ABOUT 400*F. SO AS TO FOORM SAID INSULATED BUILT-UP ROOF.
Claim 4
Dependent Claim
86 words
AN INSULATED BUILT-UP ROOF PRODUCED BY APPLYING TO ONE OF THE SHEETS OF FELT AND OF FOAM POLYSTYRENE A BITUMEN CEMENT AT A LOW TEMPERATURE OF 150-180*F. AS AN ADHESIVE, PRESSING SAID SHEETS TOGETHER TO FORM A LAMINATE, APPLYING SAID LAMINATE TO THE DECK OF A ROOF SO THAT THE FELT IS THE UPPER LAYER, AND THEREAFTER ALTERNATELY APPLYING UPPER LAYERS OF BITUMINOUS MATERIAL AND FELT THERETO WITH THE BITUMINOUS MATERIAL AT A HIGHER TEMPERATURE OF ABOUT 400*F. SO AS TO FOORM SAID INSULATED BUILT-UP ROOF.
References Cited (Backward Citations)
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US2721816A
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US2730772A
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US2893907A
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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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |