US3250640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing reinforced polyester resin sheets
Assignee: Chausson Usines SA
•
Filing: 1964-06-08
•
Granted: 1966-05-10
•
Expires: 1984-06-08
Abstract
No abstract record available.
Inventors
- 👤 Varlet Pierre Paul William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; C; C08; C08J; C08J3/00; C08J3/24; B29C70/06; B29C70/10; B29C70/12; B32; B32B; B32B27/00; C08F; C08F283/00; C08F283/01; C08J3/242; C08J5/00; C08J5/24; C08J5/249; C08L; C08L67/00; C08L67/06; C09; C09D; C09D167/00; C09D167/06; F; F23; F23C; F23C15/00; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/128; C08J2367/00; C08J2367/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T442/00; Y10T442/20; Y10T442/2361; Y10T442/273
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
PROCESS FOR THE MANUFACTURE OF REINFORCED POLYESTER RESIN SHEETS CAPABLE OF BEING SHAPED MECHANICALLY, WHICH COMPRISES THE STEPS OF FIRST IMPREGNATING A SUPPORTING LAYER OF A PERMEABLE REINFORCING MATERIAL WITH A POLYMERIZATION MODERATOR FOR POLYESTER RESIN COMPRISING A SOLUTION OF A REDUCING METAL SALT IN AN ORGANIC SOLVENT, DRYING, FURTHER IMPREGNATING SAID IMPREGNATED REINFORCING MATERIAL WITH A MIXTURE OF AN UNPOLYMERIZED THERMOSETTING POLYESTER RESIN, AND A POLYMERIZATION CATALYST THEREFOR, MAINTAINING THE SUPPORTING LAYER AND RESIN MIXTURE SUBSTANTIALLY AT AMBIENT TEMPERATURE UNTIL IT HAS AT-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |