US3244485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparing polycarbonamides
Assignee: Monsanto Co
•
Filing: 1965-02-04
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Granted: 1966-04-05
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Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Alva C Coggeshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:33
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/04; B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01J; B01J19/00; B01J19/18; B01J19/20; B01J2219/00; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AN APPARATUS FOR PRODUCING POLYCARBONAMIDES COMPRISING IN SEQUENTIAL ARRANGEMENT MIXING MEANS FOR PREPARING SOLVENT SOLUTION OF POLYCARBONAMIDE REACTANTS; EVAPORATING MEANS FOR CONCENTRATING PREPARED SOLVENT SOLUTION OF POLYCARBONAMIDE REACTANTS; REACTOR MEANS FOR REACTING RESULTING CONCENTRATED SOLVENT SOLUTION AT ELEVATED TEMPERATURE AND PRESSURE; FLASHER MEANS FOR RETURNING RESULTING REACTED SOLUTION SUBSTANTIALLY ADIABATICALLY TO SUBSTANTIALLY ATMOSPHERIC PRESSURE; AND HORI-
Claim 2
Independent Claim
56 words
AN APPARATUS FOR PRODUCING POLYCARBONAMIDES COMPRISING IN SEQUENTIAL ARRANGEMENT MIXING MEANS FOR PREPARING SOLVENT SOLUTION OF POLYCARBONAMIDE REACTANTS; EVAPORATING MEANS FOR CONCENTRATING PREPARED SOLVENT SOLUTION OF POLYCARBONAMIDE REACTANTS; REACTOR MEANS FOR REACTING RESULTING CONCENTRATED SOLVENT SOLUTION AT ELEVATED TEMPERATURE AND PRESSURE; FLASHER MEANS FOR RETURNING RESULTING REACTED SOLUTION SUBSTANTIALLY ADIABATICALLY TO SUBSTANTIALLY ATMOSPHERIC PRESSURE; AND HORI-
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |