Patent US3255630A successfully refreshed from Google Patents.
Patent US2556108A successfully refreshed from Google Patents.
US2556108A
Expired / Lapsed
US
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Manufacture of condensation products
Assignee: Griffin Chemical Co
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Filing: 1949-05-31
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Granted: 1951-06-05
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Expires: 1969-05-31
Abstract
No abstract record available.
Inventors
- 👤 Paul M Ruedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07G; C07G99/00; C07G99/002; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE PROCESS COMPRISING HEATING AN OIL SOLUBLE PETROLEUM SULFONIC ACID AND CASTOR OIL TO A TEMPERATURE OF APPROXIMATELY 300* F. FOR SEVERAL HOURS TO EFFECT A CONDENSATION OF SAID ACID AND SAID CASTOR OIL THROUGH JUNTION OF THE TWO IN THEIR NON-ACID PORTIONS.
Claim 2
Dependent Claim
43 words
THE PROCESS COMPRISING HEATING AN OIL SOLUBLE PETROLEUM SULFONIC ACID AND CASTOR OIL TO A TEMPERATURE OF APPROXIMATELY 300* F. FOR SEVERAL HOURS TO EFFECT A CONDENSATION OF SAID ACID AND SAID CASTOR OIL THROUGH JUNTION OF THE TWO IN THEIR NON-ACID PORTIONS.
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) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |