US3553215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahydric isocyanurate
Assignee: SI Group Inc
•
Filing: 1969-03-12
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Granted: 1971-01-05
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Expires: 1989-03-12
Abstract
Abstract COMPOUNDS ARE PREPARED HAVING THE FORMULA HO-CH2-CH2-(2,4,6-TRI(O=),5-(HO-CH2-CH2-)HEXAHYDRO-S- TRIAZIN-1,3-YLENE)-CH2-CH2-(R-CH2-CH2-(2,4,6-TRI(O=),5- (HO-CH2-CH2-)HEXAHYDRO-S-TRIAZIN-1,3-YLENE)-CH2-CH2)N-OH WHERE R IS -OOC-(1,4-PHENYLENE)-COO-, -OOC-(1,3-PHENYLENE)-COO-, -OOC-(1,4-PHENYLENE)-CO-(1,4-PHENYLENE)-COO- OR -OOC-(1,3,3-TRI(CH3-)INDAN-6,1-YLENE)-(1,4-PHENYLENE)-COO- PREFERABLY R IS THE RESIDUE OR TEREPHTHALIC ACID, AND N IS AN INTEGER FROM 1 TO 6.
Inventors
- 👤 Edmund J Zalewski
- 👤 Manuel A Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:24
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |