Patent US2839503A successfully refreshed from Google Patents.
US2839503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gluconic acid salts of certain oxyalkylated amine-modified thermoplastic phenol-aldehyde resins, and method of making same
Assignee: Baker Petrolite LLC
•
Filing: 1956-04-09
•
Granted: 1958-06-17
•
Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:59
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G14/00; C08G14/02; C08G14/04; C08G14/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A THREE-STEP MANUFACTURING PROCESS INCLUDING THE METHOD OF FIRST CONDENSATING (A) AN OXYALKYLATION-SUSCEPTIBLE, FUSIBLE, NON-OXYGENATED ORGANIC SOLVENT-SOULBLE, WATER-INSOLUBLE, LOW-STAGE PHENOL-ALDEHYDE RESIN HAVING AN AVERAGE MOLECULAR WEIGHT CORRESPONDING AND NOT OVER 6 PHENOLIC NUCLEI PER RESIN MOLECULE; SAID RESIN BEING DIFUNCTIONAL ONLY IN REGARD TO METHYLO-FORM ING REACTIVITY; SAID RESIN BEING DERIVED BY REACTION BETWEEN A DIFUNCTIONAL MONOHYDRIC PHENOL AND AN ALDEHYDE HAVING NOT OVER 8 CARBON ATOMS AND REACTIVE TOWARD SAID PHENOL; SAID RESIN BEING FORMED IN THE SUBSTANTIAL ABSENCE OF TRIFUNCTIONAL PHENOLS; SAID PHENOL BEING OF THE FORMULA
Claim 2
Dependent Claim
89 words
A THREE-STEP MANUFACTURING PROCESS INCLUDING THE METHOD OF FIRST CONDENSATING (A) AN OXYALKYLATION-SUSCEPTIBLE, FUSIBLE, NON-OXYGENATED ORGANIC SOLVENT-SOULBLE, WATER-INSOLUBLE, LOW-STAGE PHENOL-ALDEHYDE RESIN HAVING AN AVERAGE MOLECULAR WEIGHT CORRESPONDING AND NOT OVER 6 PHENOLIC NUCLEI PER RESIN MOLECULE; SAID RESIN BEING DIFUNCTIONAL ONLY IN REGARD TO METHYLO-FORM ING REACTIVITY; SAID RESIN BEING DERIVED BY REACTION BETWEEN A DIFUNCTIONAL MONOHYDRIC PHENOL AND AN ALDEHYDE HAVING NOT OVER 8 CARBON ATOMS AND REACTIVE TOWARD SAID PHENOL; SAID RESIN BEING FORMED IN THE SUBSTANTIAL ABSENCE OF TRIFUNCTIONAL PHENOLS; SAID PHENOL BEING OF THE FORMULA
References Cited (Backward Citations)
US2031557A
Cited
US2743254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |