US3842035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder coating composition
Assignee: Shell USA Inc
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Filing: 1972-09-25
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Granted: 1974-10-15
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Expires: 1992-09-25
Abstract
Abstract 1. A HEAT CURABLE POWDER COATING COMPOSITION WHICH CURES TO A MATT FINISH COMPRISING (A) ONE PART BY WEIGHT OF A POWDER COMPOSITION COMPRISING A POLYEPOXIDE HAVING MORE THANE ONE OXIRANE GROUP AND A LATENT EPOXY CURING AGENT, SAID COMPOSITION HAVING A GEL TIME OF FROM 6 TO 30 MINUTES AND (B) FROM 0.5 TO 5 PARTS BY WEIGHT OF A POWDER COMPOSITION COMPRISING A POLYEPOXIDE HAVING MORE THAN ONE OXIRANE GROUP, A LATENT EPOXY CURING AGENT, AND A CURING ACCELERATOR, THE RATIO OF THE GEL TIME OF (A) TO (B) BEING NO MORE THAN 20.
Inventors
- 👤 C Klaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
C; C09; C09D; C09D163/00; B; B05; B05D; B05D5/00; B05D5/02; C08; C08J; C08J3/00; C08J3/24; C08J3/243; C09D5/00; C09D5/03; C08J2363/00; Y; Y10; Y10S; Y10S524/00; Y10S524/904; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A HEAT CURABLE POWDER COATING COMPOSITION WHICH CURES TO A MATT FINISH COMPRISING (A) ONE PART BY WEIGHT OF A POWDER COMPOSITION COMPRISING A POLYEPOXIDE HAVING MORE THANE ONE OXIRANE GROUP AND A LATENT EPOXY CURING AGENT, SAID COMPOSITION HAVING A GEL TIME OF FROM 6 TO 30 MINUTES AND (B) FROM 0.5 TO 5 PARTS BY WEIGHT OF A POWDER COMPOSITION COMPRISING A POLYEPOXIDE HAVING MORE THAN ONE OXIRANE GROUP, A LATENT EPOXY CURING AGENT, AND A CURING ACCELERATOR, THE RATIO OF THE GEL TIME OF (A) TO (B) BEING NO MORE THAN 20.
Claim 2
Dependent Claim
95 words
A HEAT CURABLE POWDER COATING COMPOSITION WHICH CURES TO A MATT FINISH COMPRISING (A) ONE PART BY WEIGHT OF A POWDER COMPOSITION COMPRISING A POLYEPOXIDE HAVING MORE THANE ONE OXIRANE GROUP AND A LATENT EPOXY CURING AGENT, SAID COMPOSITION HAVING A GEL TIME OF FROM 6 TO 30 MINUTES AND (B) FROM 0.5 TO 5 PARTS BY WEIGHT OF A POWDER COMPOSITION COMPRISING A POLYEPOXIDE HAVING MORE THAN ONE OXIRANE GROUP, A LATENT EPOXY CURING AGENT, AND A CURING ACCELERATOR, THE RATIO OF THE GEL TIME OF (A) TO (B) BEING NO MORE THAN 20.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |