US3660327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lactone or lactam pre-esterified isocyanurate-containing resins
Assignee: Elantas PDG Inc
•
Filing: 1970-06-08
•
Granted: 1972-05-02
•
Expires: 1990-06-08
Abstract
Abstract RESINS, INCLUDING POLYESTERS, POLYESTER-AMIDES, POLYESTER-IMIDES, POLYESTER-AMIDE-IMIDES, ETC., PREPARED FROM LACTONE OR LACTAM PRE-ESTERIFIED ISOCYANURATE DERIVATIVES (PEIC). THESE RESINS ARE PREFERABLY DERIVED FROM HYDROXYALKYL, SUCH AS HYDROXYETHYL, ISOCYANURATES, AND MOST PREFERABLY FROM TRIS(2-HYDROXYEHTYL) ISOCYANURATE OR ITS EQUIVALENT, WHICH HAS BEEN PRE-ESTERIFIED WITH A LACTONE, A LACTAM OR THEIR EQUIVALENTS.
Inventors
- 👤 Donald F Loncrini
- 👤 Henry J Markowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:27
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/302; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; H01B3/303; H01B3/306; H01B3/42; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |