US3029172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam-coated expanded plastic insulation and roof board
Assignee: Dow Chemical Co
•
Filing: 1960-03-28
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Granted: 1962-04-10
•
Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 John Y Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:35
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/35; E04D3/351; E04D3/352; B; B32; B32B; B32B27/00; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; Y; Y10; Y10S; Y10S60/00; Y10S60/909; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/239; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/31504; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A HEAT RESISTANT INSULATION BOARD COMPRISING A CORE OF A MEMBR OF THE GROUP CONSISTING OF EXPANDED ALKENYL AROMATIC AND A-OLEFIN RESINS AND A TIGHTLY ADHERING COATING OF A POLYURETHANE FOAM.
Claim 2
Dependent Claim
31 words
A HEAT RESISTANT INSULATION BOARD COMPRISING A CORE OF A MEMBR OF THE GROUP CONSISTING OF EXPANDED ALKENYL AROMATIC AND A-OLEFIN RESINS AND A TIGHTLY ADHERING COATING OF A POLYURETHANE FOAM.
References Cited (Backward Citations)
US1681321A
Cited
US2861525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |