US3264336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of isocyanates by reduction of the hydrolyzable chlorine and acid content
Assignee: Bayer Corp
•
Filing: 1964-09-11
•
Granted: 1966-08-02
•
Expires: 1984-09-11
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:33
CPC Classifications
C; C07; C07C; C07C263/00; C07C263/18; C07C263/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF REDUCING THE HYDROLYZABLE CHLORINE AND ACIDITY CONTENT OF ORGANIC ISOCYANATES WHICH COMPRISES MIXING WITH THE ORGANIC ISOCYANATE, AN EFFECTIVE AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CADMIUM LAURATE, COBALTIC BENZOATE AND FERRIC NAPHTHENATE TO REDUCE THE HYDROLYZABLE CHLORINE AND ACIDITY CONTENT AND DISTILLING THE MIXTURE TO SEPARATE ISOCYANATE.
Claim 2
Independent Claim
54 words
A METHOD OF REDUCING THE HYDROLYZABLE CHLORINE AND ACIDITY CONTENT OF ORGANIC ISOCYANATES WHICH COMPRISES MIXING WITH THE ORGANIC ISOCYANATE, AN EFFECTIVE AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CADMIUM LAURATE, COBALTIC BENZOATE AND FERRIC NAPHTHENATE TO REDUCE THE HYDROLYZABLE CHLORINE AND ACIDITY CONTENT AND DISTILLING THE MIXTURE TO SEPARATE ISOCYANATE.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |