US2999106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of storing 4,4'-methylenediphenylisocyanate
Assignee: EIDP Inc
•
Filing: 1959-04-17
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Granted: 1961-09-05
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Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Robert M Prosser
- 👤 Jr Charles A Seibert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:41
CPC Classifications
C; C07; C07C; C07C263/00; C07C263/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A METHOD OF STORING 4,4''-METHYLENEDIPHENYLISOCYANATE SO AS TO SUBSTANTIALLY PREVENT THE FORMATION OF INSOLUBLE RESIDUES THEREIN WHICH CONSISTS OF MAINTAINING THE 4,4''-METHYLENEDIPHENYLISOCYANATE IN A CLOSED CONTAINER IN THE LIQUID STATE AT A TEMPERATURE OF BETWEEN 40*C. AND 50*C.
Claim 2
Independent Claim
38 words
A METHOD OF STORING 4,4''-METHYLENEDIPHENYLISOCYANATE SO AS TO SUBSTANTIALLY PREVENT THE FORMATION OF INSOLUBLE RESIDUES THEREIN WHICH CONSISTS OF MAINTAINING THE 4,4''-METHYLENEDIPHENYLISOCYANATE IN A CLOSED CONTAINER IN THE LIQUID STATE AT A TEMPERATURE OF BETWEEN 40*C. AND 50*C.
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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |