US3531901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat insulating structural member
Assignee: Owens Corning
•
Filing: 1966-05-18
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Granted: 1970-10-06
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Expires: 1986-05-18
Abstract
No abstract record available.
Inventors
- 👤 Charles H Will Jr
- 👤 Robert M Meechan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/762; E04C; E04C3/00; E04C3/02; E04C3/29; E04H; E04H5/00; E04H5/10; E04B2/00; E04B2/74; E04B2/7407; E04B2/7409; E04B2/7412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2323936A
Cited
US2259214A
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US2600843A
Cited
US2766163A
Cited
US2958402A
Cited
US2854230A
Cited
US3095187A
Cited
US3114179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |