US2528152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing resin impregnated sheets
Assignee: Uniroyal Inc
•
Filing: 1947-06-24
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Granted: 1950-10-31
•
Expires: 1967-06-24
Abstract
No abstract record available.
Inventors
- 👤 Stephen V Landgraf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:04
CPC Classifications
B; B32; B32B; B32B27/00; D; D06; D06B; D06B15/00; D06B15/08; D06B15/085; Y; Y10; Y10S; Y10S264/00; Y10S264/53; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T156/1732; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31794
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
THE METHOD OF PRODUCING BY A CONTINUOUS OPERATION A RESIN IMPREGNATED LAMINATED SHEET HAVING A HARD MAR-RESISTANT SURFACE, WHICH COMPRISES IMPREGNATING FIBROUS SHEETS WITH A COMPLETELY POLYMERIZABLE LIQUID UNSATURATED POLYESTER RESIN, BRINGING THESE SHEETS TOGETHER AND SLIDING THE LAMINATED SHEET THEY PRODUCE OVER THE HOT CONVEX SURFACE OF A STATIONARY ARCUATE PLATEN WITH AN IRONING ACTION AND AT SUCH A RATE THAT THE RESIN WILL POLYMERIZE AND BOND THE SHEETS TOGETHER WHILE TRAVELING OVER SUCH SUR-
References Cited (Backward Citations)
US770648A
Cited
FR380520A
Cited
DE674252C
Cited
US2208060A
Cited
US2219065A
Cited
US2345013A
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US2376922A
Cited
US2414125A
Cited
US2432752A
Cited
US2496911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |