Patent US3437550A successfully refreshed from Google Patents.
US3437550A
Expired / Lapsed
US
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Glass fiber reinforced crystalline polypropylene composition and laminate
Assignee: Hercules LLC
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Filing: 1966-01-07
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Granted: 1969-04-08
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Expires: 1986-01-07
Abstract
No abstract record available.
Inventors
- 👤 James T Paul Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:03
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/28; C03C25/30; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08K9/00; C08K9/08; C08L23/00; C08L23/02; C08L23/10; C08J2323/00; C08J2323/26; C08K7/10; C08K7/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31645; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3594
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A LAMINATE COMPRISING A MATRIX OF CRYSTALLINE POLYPROPYLENE REINFORCED WITH LAYERS OF GLASS FABRIC, SAID GLASS FABRIC HAVING A COATING COMPRISED OF THE REACTION PRODUCT OF A SILANE HAVING AT LEAST ONE GLASS-REACTIVE SUBSTITUENT AND AT LEAST ONE ACID-REACTIVE ORGANIC SUBSTITUENT WITH CRYSTALLINE POLYPROPYLENE MODIFIED BY ADDITION THERTO OF ABOUT 0.15 TO 10% BY WEIGHT OF AN A,B-ETHYLENICALLY UNSATURATED ACID OR ANHYDRIDE.
Claim 2
Dependent Claim
62 words
A LAMINATE COMPRISING A MATRIX OF CRYSTALLINE POLYPROPYLENE REINFORCED WITH LAYERS OF GLASS FABRIC, SAID GLASS FABRIC HAVING A COATING COMPRISED OF THE REACTION PRODUCT OF A SILANE HAVING AT LEAST ONE GLASS-REACTIVE SUBSTITUENT AND AT LEAST ONE ACID-REACTIVE ORGANIC SUBSTITUENT WITH CRYSTALLINE POLYPROPYLENE MODIFIED BY ADDITION THERTO OF ABOUT 0.15 TO 10% BY WEIGHT OF AN A,B-ETHYLENICALLY UNSATURATED ACID OR ANHYDRIDE.
References Cited (Backward Citations)
US3013915A
Cited
US3306800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |