US2504100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of phenol aldehyde resins
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-09-19
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Granted: 1950-04-18
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 Charles J Plank
- 👤 Darwin E Baderischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:57
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/20; C08G8/22; C08G8/10; C08G8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PREPARING LIGHT COLORED TO WHITE THERMOSETTING RESINS OF THE PHENOL-ALDEHYDE TYPE WHICH COMPRISES CONDENSING ONLY PHENOL AND FORMALDEHYDE IN THE MOLAR PROPORTIONS OF 6:7 IN THE PRESENCE OF BORON TRIFLUORIDE AT TEMPERATURES OF 0*C. TO 182*C., WHEREBY A PHENOL-FORMALDEHYDE RESIN IS OBTAINED WHICH AFTER MELTING COOLS TO A LIGHT COLORED TO WHITE THERMOSETTING RESIN.
Claim 2
Dependent Claim
57 words
A PROCESS FOR PREPARING LIGHT COLORED TO WHITE THERMOSETTING RESINS OF THE PHENOL-ALDEHYDE TYPE WHICH COMPRISES CONDENSING ONLY PHENOL AND FORMALDEHYDE IN THE MOLAR PROPORTIONS OF 6:7 IN THE PRESENCE OF BORON TRIFLUORIDE AT TEMPERATURES OF 0*C. TO 182*C., WHEREBY A PHENOL-FORMALDEHYDE RESIN IS OBTAINED WHICH AFTER MELTING COOLS TO A LIGHT COLORED TO WHITE THERMOSETTING RESIN.
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) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |