US3261813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room temperature curing system for urethane prepolymers utilizing bischloroaniline and dibutyltin dilaurate
Assignee: Individual
•
Filing: 1963-02-13
•
Granted: 1966-07-19
•
Expires: 1983-02-13
Abstract
No abstract record available.
Inventors
- 👤 Ramos Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C08G18/244; C08G18/246; C08G18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE METHOD OF PREPARING A CURED URETHANE POLYMER WHICH COMPRISES MIXING, AT A TEMPERATURE IN THE RANGE OF 60 TO 80 DEGREES FARENHEIT, (A) AN ISOCYANATE TERMINATED, LIQUID URETHANE PREPOLYMER, WITH 4,4'' - METHYLENEBIS (2 - CHLOROANILINE) AND DIBUTYLTIN DILAURATE, AND CURING THE MIXTURE AT ROOM TEMPERATURE.
Claim 2
Independent Claim
47 words
THE METHOD OF PREPARING A CURED URETHANE POLYMER WHICH COMPRISES MIXING, AT A TEMPERATURE IN THE RANGE OF 60 TO 80 DEGREES FARENHEIT, (A) AN ISOCYANATE TERMINATED, LIQUID URETHANE PREPOLYMER, WITH 4,4'' - METHYLENEBIS (2 - CHLOROANILINE) AND DIBUTYLTIN DILAURATE, AND CURING THE MIXTURE AT ROOM TEMPERATURE.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |