US3316285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toluylene diisocyanate mixture
Assignee: Bayer Corp
•
Filing: 1964-12-31
•
Granted: 1967-04-25
•
Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Cleveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; C08G18/7621; C07; C07C; C07C265/00; C07C265/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ISOMERIC MIXTURE OF TOLUYLENE DISSOCYANTE CONSISTING ESSENTIALLY OF FROM ABOUT 72 TO ABOUT 76 PERCENT BY WEIGHT OF 2,4-TOLUYLENE DISSOCYANATE AND FROM ABOUT 24 TO ABOUT 28 PERCENT BY WEIGHT OF 2,6-TOLUYLENE DISSOCYANATE.
Claim 2
Dependent Claim
34 words
AN ISOMERIC MIXTURE OF TOLUYLENE DISSOCYANTE CONSISTING ESSENTIALLY OF FROM ABOUT 72 TO ABOUT 76 PERCENT BY WEIGHT OF 2,4-TOLUYLENE DISSOCYANATE AND FROM ABOUT 24 TO ABOUT 28 PERCENT BY WEIGHT OF 2,6-TOLUYLENE DISSOCYANATE.
References Cited (Backward Citations)
US2394597A
Cited
US2611782A
Cited
US2929800A
Cited
US2866774A
Cited
US2831012A
Cited
US3217024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |