Patent US2554219A successfully refreshed from Google Patents.
US2554219A
Expired / Lapsed
US
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Method of making fluorocarbon mono-iodides
Assignee: 3M Co
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Filing: 1949-08-22
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Granted: 1951-05-22
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Expires: 1969-08-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Simons
- 👤 Thomas J Brice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:06
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD WHICH COMPRISES HEATING TOGETHER AN ANHYDROUS MIXTURE OF IODINE AND A SILVER SALT OF A SATURATED FLUOROCARBON MONOCARBOXYLIC ACID, ADMIXED WITH A RIGOROUSLY INERT DILUENT, TO A TEMPERATURE OF AT LEAST ABOUT 100* C. AT WHICH A SATURATED FLUOROCARBON MONO-IODINE REACTION PRODUCT IS EVOLVED, AND RECOVERING THE LATTER.
Claim 2
Independent Claim
50 words
THE METHOD WHICH COMPRISES HEATING TOGETHER AN ANHYDROUS MIXTURE OF IODINE AND A SILVER SALT OF A SATURATED FLUOROCARBON MONOCARBOXYLIC ACID, ADMIXED WITH A RIGOROUSLY INERT DILUENT, TO A TEMPERATURE OF AT LEAST ABOUT 100* C. AT WHICH A SATURATED FLUOROCARBON MONO-IODINE REACTION PRODUCT IS EVOLVED, AND RECOVERING THE LATTER.
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) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |