Patent US3293224A successfully refreshed from Google Patents.
US3293224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris (2-hydroxyethyl) isocyanurate homopolymer
Assignee: Honeywell International Inc
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Filing: 1963-08-05
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Granted: 1966-12-20
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles B R Fitz-William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:36
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
27 words
A METHOD OF PREPARING TRIS(2-HYDROXYETHYL)ISOCYANURATE SOLID RESINOUS HOMOPOLYMER WHICH COMPRISES HEATING TRIS(2-HYDROXYETHYL)ISOCYANURATE AT TEMPERATURE OF 150* TO 250*C. IN THE PRESENCE OF AN ACIDIC ETHERIFICATIONTYPE CONDENSATION CATALYST.
Claim 2
Independent Claim
27 words
A METHOD OF PREPARING TRIS(2-HYDROXYETHYL)ISOCYANURATE SOLID RESINOUS HOMOPOLYMER WHICH COMPRISES HEATING TRIS(2-HYDROXYETHYL)ISOCYANURATE AT TEMPERATURE OF 150* TO 250*C. IN THE PRESENCE OF AN ACIDIC ETHERIFICATIONTYPE CONDENSATION CATALYST.
Claim 3
Dependent Claim
12 words
SOLID RESINOUS HOMOPOLYMER OF TRIS(2-HYDROXYETHYL)ISOCYANURATE, PREPARED BY THE METHOD OF CHAIN 1.
Claim 4
Dependent Claim
12 words
SOLID RESINOUS HOMOPOLYMER OF TRIS(2-HYDROXYETHYL)ISOCYANURATE, PREPARED BY THE METHOD OF CHAIN 1.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |