Patent US2954356A successfully refreshed from Google Patents.
US2954356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal stabilizers for rubber
Assignee: Monsanto Chemicals Ltd
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Filing: 1955-10-17
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Granted: 1960-09-27
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Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 Dudley B Merrifield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/005; C08K3/00; C08K3/10; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD OF PRODUCING VULCANIZED RUBBER WHICH COMPRISES INCORPORATING INTO A SULFUR VULCANIZABLE HYDROCARBON RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND BUTADIENE STYRENE COPOLYMER RUBBER IN AN AMOUNT WITHIN THE RANGE OF 0.01%-0.1% BASED ON THE RUBBER HYDROCARBON OF A FREE HEAVY METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES, IODIDES AND FATTY ACID SALTS OF COPPER, LEAD, BARIUM, MERCURY, BISMUTH, CADMIUM AND MIXTURES THEREOF AND VULCANIZING THE MIXTURE IN THE PRESENCE OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF VULCANIZING AMOUNT OF 4,4''DITHIODIMORPHOLINE AND ANTIOXIDANT AMOUNTS OF PHENOTHIAZINE, DIPHENYL P-PHENYLENEDIAMINE, N-CYCLOHEXYL N, N''-DINITROSO N''-PHENYL P-PHENYLENEDIAMINE, N,N''-DINITROSO N,N''-DIPHENYL P-PHENYLENEDIAMINE, 1,2-DIHYDRO2,2,4-TRIMETHYL-6-PHENYLQUINOLINE AND MIXTURES THEREOF.
Claim 2
Independent Claim
109 words
A METHOD OF PRODUCING VULCANIZED RUBBER WHICH COMPRISES INCORPORATING INTO A SULFUR VULCANIZABLE HYDROCARBON RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND BUTADIENE STYRENE COPOLYMER RUBBER IN AN AMOUNT WITHIN THE RANGE OF 0.01%-0.1% BASED ON THE RUBBER HYDROCARBON OF A FREE HEAVY METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES, IODIDES AND FATTY ACID SALTS OF COPPER, LEAD, BARIUM, MERCURY, BISMUTH, CADMIUM AND MIXTURES THEREOF AND VULCANIZING THE MIXTURE IN THE PRESENCE OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF VULCANIZING AMOUNT OF 4,4''DITHIODIMORPHOLINE AND ANTIOXIDANT AMOUNTS OF PHENOTHIAZINE, DIPHENYL P-PHENYLENEDIAMINE, N-CYCLOHEXYL N, N''-DINITROSO N''-PHENYL P-PHENYLENEDIAMINE, N,N''-DINITROSO N,N''-DIPHENYL P-PHENYLENEDIAMINE, 1,2-DIHYDRO2,2,4-TRIMETHYL-6-PHENYLQUINOLINE AND MIXTURES THEREOF.
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |