US3753848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulation installation
Assignee: Dow Chemical Co
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Filing: 1971-06-23
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Granted: 1973-08-21
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Expires: 1991-06-23
Abstract
Abstract CURVED SURFACES ARE INSULATED WITH SLABS, BOARDS OR PLANKS OF LIGHT WEIGHT MATERIAL BY PROVIDING A PLURALITY OF OUTWARDLY PROJECTING STUDS ON THE SURFACE TO BE INSULATED, AFFIXING TO THE STUDS A SHEET MEMBER AFFIXING TO THE SHEETS MEMBER SECOND STUDS DISPLACE FROM THE FIRST STUDS. A CONVENIENT MEANS IS PROVIDES FOR INSTALLSECOND STUDS. A CONVENIENT MEANS IS PROVIDED FOR INSTALLING THERMAL INSULATION ON REGULARLY OR IRREGULARLY CURVED SURFACES.
Inventors
- 👤 R Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/902; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24479; Y10T428/24521; Y10T428/24529; Y10T428/24628; Y10T428/24669; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |