Patent US2685374A successfully refreshed from Google Patents.
Patent US3098841A successfully refreshed from Google Patents.
US3098841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polynuclear polyamines
Assignee: Shell USA Inc
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Filing: 1960-07-11
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Granted: 1963-07-23
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
- 👤 Karl J Sax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10L1/223; C10L1/2235; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE STABLIZED COMPOSITION CONSISTING ESSENTIALLY OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON RUBBERS AND POLYMERIZED HYDROCARBON ALPHA-OLEFINS, CONTAINING AN AMOUNT, SUFFICIENT TO STABLIZE THE POLYMER AGAINST OXIDATIVE DETERIORATION, OF A POLY(3,5-DIALKYL4-HYDROXYBENZYL) HYDROCARBON DIAMINE, SELECTED FROM THE GROUP CONSISTING OF ALKANE DIAMINE AND MONONUCLEAR AROMATIC DIAMINE, WHEREIN SAID ALKANE AND MONONUCLEAR AROMATIC MOIETIES HAVE UP TO 12 CARBON ATOMS EACH, AND EACH ARKYL GROUP ON SAID BENYZL NUCLEI HAS UP TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
76 words
THE STABLIZED COMPOSITION CONSISTING ESSENTIALLY OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON RUBBERS AND POLYMERIZED HYDROCARBON ALPHA-OLEFINS, CONTAINING AN AMOUNT, SUFFICIENT TO STABLIZE THE POLYMER AGAINST OXIDATIVE DETERIORATION, OF A POLY(3,5-DIALKYL4-HYDROXYBENZYL) HYDROCARBON DIAMINE, SELECTED FROM THE GROUP CONSISTING OF ALKANE DIAMINE AND MONONUCLEAR AROMATIC DIAMINE, WHEREIN SAID ALKANE AND MONONUCLEAR AROMATIC MOIETIES HAVE UP TO 12 CARBON ATOMS EACH, AND EACH ARKYL GROUP ON SAID BENYZL NUCLEI HAS UP TO 8 CARBON ATOMS.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |