US2900421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting polymerization
Assignee: Individual
•
Filing: 1957-02-06
•
Granted: 1959-08-18
•
Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Morris S Kharasch
- 👤 Nudenberg Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:35
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42; C07C7/00; C07C7/20; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THAT METHOD OF INHIBITING UNDESIRABLE POLYMERIZATION OF A POLYMERIZABLE OLEFINICALLY UNSATURATED MONOMER WHICH COMPRISES MAINTAINING SAID MONOMER IN CONTACT WITH A NITRITE SALT, THE IMPROVEMENT WHICH COMPRISES THE STEP OF SUPPLYING THE NITRITE SALT IN SOLUTION IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF GLYCOLS, POLYALKYLENE GLYCOLS, POLYHYDROXY-SUBSTITUATED HYDROCARBONS, ALKANOLAMANIES HAVING MORE THAN 2 CARBON ATOMS IN THE ALKYLENE GROUP, AND ALKYL-SUBSTITUTED PHENOLS
Claim 2
Dependent Claim
66 words
IN THAT METHOD OF INHIBITING UNDESIRABLE POLYMERIZATION OF A POLYMERIZABLE OLEFINICALLY UNSATURATED MONOMER WHICH COMPRISES MAINTAINING SAID MONOMER IN CONTACT WITH A NITRITE SALT, THE IMPROVEMENT WHICH COMPRISES THE STEP OF SUPPLYING THE NITRITE SALT IN SOLUTION IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF GLYCOLS, POLYALKYLENE GLYCOLS, POLYHYDROXY-SUBSTITUATED HYDROCARBONS, ALKANOLAMANIES HAVING MORE THAN 2 CARBON ATOMS IN THE ALKYLENE GROUP, AND ALKYL-SUBSTITUTED PHENOLS
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |