Patent US3053807A successfully refreshed from Google Patents.
US3053807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of resins
Assignee: Pennwalt Corp
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Filing: 1959-06-26
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Granted: 1962-09-11
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Expires: 1979-06-26
Abstract
No abstract record available.
Inventors
- 👤 Burton E Lederman
- 👤 Nicholas J Capron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:21
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A METHOD FOR PREPARING A HEAT-REACTIVE, OIL-SOLUBLE PHENOLIC RESIN COMPRISING THE STEPS OF REACTING AN ALKYLATED PHENOL OF THE FORMULA:
Claim 2
Independent Claim
20 words
A METHOD FOR PREPARING A HEAT-REACTIVE, OIL-SOLUBLE PHENOLIC RESIN COMPRISING THE STEPS OF REACTING AN ALKYLATED PHENOL OF THE FORMULA:
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |