US2867647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pentaerythritol tetranitrate
Assignee: Imperial Chemical Industries Ltd
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Filing: 1957-02-04
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Granted: 1959-01-06
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Gow Robert Stewart
- 👤 Williamson Andrey Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:31
CPC Classifications
C; C07; C07C; C07C203/00; C07C203/02; C07C203/04; C06; C06B; C06B25/00; C06B25/32; C06B45/00; C06B45/18; C06B45/20; C06B45/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
PENTAERYTHRITOL TETRANITRATE PARTICLES HAVING A COATING OF WATER-SOLUBLE NON-IONIC SURFACE ACTIVE AGENT, SAID SURFACE ACTIVE AGENT CONSISTING OF AT LEAST ONE POLYOXYETHYLENE DERIVATIVE HAVING A CHAIN OF AT LEAST THREE ETHYLENEOXY GROUPS AND SELECTED FROM THE GROUP CONSISTING OF POLYOXYETHYLENE DERIVATIVES OF HIGHER FATTY ALCOHOLS, POLYOXYETHYLENE DERIVATIVES OF ORGANIC ACID AMIDES, POLY OXYETHYLENE DERIVATIVES OF ALKYL PHENOLS, AND POLYOXYETHYLENE DERIVATIVES OF ORGANIC CARBOXYLIC ACIDS HAVING AT LEAST SIX CARBON ATOMS.
Claim 2
Dependent Claim
70 words
PENTAERYTHRITOL TETRANITRATE PARTICLES HAVING A COATING OF WATER-SOLUBLE NON-IONIC SURFACE ACTIVE AGENT, SAID SURFACE ACTIVE AGENT CONSISTING OF AT LEAST ONE POLYOXYETHYLENE DERIVATIVE HAVING A CHAIN OF AT LEAST THREE ETHYLENEOXY GROUPS AND SELECTED FROM THE GROUP CONSISTING OF POLYOXYETHYLENE DERIVATIVES OF HIGHER FATTY ALCOHOLS, POLYOXYETHYLENE DERIVATIVES OF ORGANIC ACID AMIDES, POLY OXYETHYLENE DERIVATIVES OF ALKYL PHENOLS, AND POLYOXYETHYLENE DERIVATIVES OF ORGANIC CARBOXYLIC ACIDS HAVING AT LEAST SIX CARBON ATOMS.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |