US2906720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising aromatic petroleum residue and polyepoxide and process for treating surfaces therewith
Assignee: Shell Development Co
•
Filing: 1957-04-24
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Granted: 1959-09-29
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Expires: 1977-04-24
Abstract
No abstract record available.
Inventors
- 👤 Warren C Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
C; C08; C08L; C08L63/00; C09; C09D; C09D163/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A COMPOSITION COMPRISING A MIXTURE OF A HOMOGENEOUS SINGLE PHASE HIGHLY AROMATIC PETROLEUM RESIDUE HAVING A PRECIPATION INDEX BETWEEN 50 AND 100 AND A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING AN EPOXY EQUIVALENT GREATER THAN ONE WHEREIN "PRECIPATION INDEX" REFERS TO THE VOLUME PERCENT OF ALPHA-METHYL NAPTHALENE IN SOLUTION AFTER TITRATION OF A 10% SOLUTION OF THE SAID PETROLEUM RESIDUE IN ALPHA-METHYL NAPHTHALENE WITH N-HEXADECANE UNTIL PRECIPATION OCCURS.
Claim 2
Dependent Claim
69 words
A COMPOSITION COMPRISING A MIXTURE OF A HOMOGENEOUS SINGLE PHASE HIGHLY AROMATIC PETROLEUM RESIDUE HAVING A PRECIPATION INDEX BETWEEN 50 AND 100 AND A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING AN EPOXY EQUIVALENT GREATER THAN ONE WHEREIN "PRECIPATION INDEX" REFERS TO THE VOLUME PERCENT OF ALPHA-METHYL NAPTHALENE IN SOLUTION AFTER TITRATION OF A 10% SOLUTION OF THE SAID PETROLEUM RESIDUE IN ALPHA-METHYL NAPHTHALENE WITH N-HEXADECANE UNTIL PRECIPATION OCCURS.
References Cited (Backward Citations)
US2599817A
Cited
US2528417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |