US2999831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanized rubber product containing a metal hydride as an antioxidant
Assignee: Stewart Dev Co
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Filing: 1957-06-26
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Granted: 1961-09-12
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Expires: 1977-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hugh T Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:54
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/10; C08K3/12; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
A VULCANIZED RUBBER PRODUCT CONTAINING AS AN ANTIOXIDANT A HYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDRIDE, CALCIUM HYDRIDE, TITANIUM HYDRIDE AND ZIRCONIUM HYDRIDE, SAID HYDRIDE BEING UNIFORMLY DISPERSED THROUGHOUT SAID PRODUCT AND BEING PRESENT IN AN AMOUNT FROM 0.10 PART TO 5.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT 0.10 PART TO 5.0 PARTS BY WEIGHT PER 100
Claim 2
Dependent Claim
61 words
A VULCANIZED RUBBER PRODUCT CONTAINING AS AN ANTIOXIDANT A HYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDRIDE, CALCIUM HYDRIDE, TITANIUM HYDRIDE AND ZIRCONIUM HYDRIDE, SAID HYDRIDE BEING UNIFORMLY DISPERSED THROUGHOUT SAID PRODUCT AND BEING PRESENT IN AN AMOUNT FROM 0.10 PART TO 5.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT 0.10 PART TO 5.0 PARTS BY WEIGHT PER 100
Claim 3
Dependent Claim
30 words
THE PRODUCT OF CLAIM 1 IN WHICH SAID HYDRIDE IS DISPERSED IN POWDERED FORM IN A MEDIUM SELECTED FROM THE GROUP CONSISTING OF WHITE MINERAL OIL, PARAFFIN OIL, AND PETROLATUM.
References Cited (Backward Citations)
US2252318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |