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US3060221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pentaerytheritol esters
Assignee: Gen Auiline & Film Corp
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Filing: 1961-03-20
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Granted: 1962-10-23
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Telfer L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:56
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49; C07C205/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AMINOBENZOIC ACID ESTERS OF PENTAERYTHRITOL IN WHICH 1 TO 4 OF THE HYDROXYL GROUPS OF PENTAERYTHRITOL ARE ESTERIFIED WITH AMINOBENZOIC ACID WHEREIN THE AMINO GROUP OCCUPIES ONE OF THE POSITIONS META AND PARA TO THE CARBOXY-ESTER GROUP.
Claim 2
Dependent Claim
37 words
AMINOBENZOIC ACID ESTERS OF PENTAERYTHRITOL IN WHICH 1 TO 4 OF THE HYDROXYL GROUPS OF PENTAERYTHRITOL ARE ESTERIFIED WITH AMINOBENZOIC ACID WHEREIN THE AMINO GROUP OCCUPIES ONE OF THE POSITIONS META AND PARA TO THE CARBOXY-ESTER GROUP.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |