Patent US3286010A successfully refreshed from Google Patents.
Patent US3240618A successfully refreshed from Google Patents.
US3240618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form panels
Assignee: United States Plywood Corp
•
Filing: 1961-08-22
•
Granted: 1966-03-15
•
Expires: 1981-08-22
Abstract
No abstract record available.
Inventors
- 👤 Charles B Hemming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:21
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/02; E04G9/05; B; B05; B05D; B05D7/00; B05D7/06; B05D7/08; B05D3/00; B05D3/10; B05D3/104; B05D7/50; B05D7/52; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31844; Y10T428/31848; Y10T428/31851
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
IMPROVED PANEL WHICH COMPRISES A FIBROUS BOARD CHARACTERIZED BY HAVING AT LEAST ONE SURFACE COATED WITH FORM OIL AND WHEREIN A POROUS POLYURETHANE FILM IS ADHERED TO THE OIL COATED SURFACE.
Claim 2
Dependent Claim
31 words
IMPROVED PANEL WHICH COMPRISES A FIBROUS BOARD CHARACTERIZED BY HAVING AT LEAST ONE SURFACE COATED WITH FORM OIL AND WHEREIN A POROUS POLYURETHANE FILM IS ADHERED TO THE OIL COATED SURFACE.
References Cited (Backward Citations)
US2282827A
Cited
US2432002A
Cited
US2316752A
Cited
US2441953A
Cited
US2630395A
Cited
US2706162A
Cited
US2863364A
Cited
US2903380A
Cited
US2772986A
Cited
US2937950A
Cited
US2875020A
Cited
US2914833A
Cited
US2933413A
Cited
US3030249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |