US3029295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of poly-chlorinated diphenyl derivatives
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1960-03-04
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Granted: 1962-04-10
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Expires: 1980-03-04
Abstract
No abstract record available.
Inventors
- 👤 Thermet Robert
- 👤 Parvi Ludovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:33
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF PREPARATION, IN A SINGLE STAGE OF CHLORINATED DIPHENYL DERIVATIVES HAVING A DEGREE OF CHLORINATION UP TO 100%, SAID METHOD COMPRISING, PASSING A GASEOUS STREAM CONTAINING A CHLORINE GAS INGREDIENT AND A DIPHENYL INGREDIENT AS ESSENTIAL INGREDIENTS THEREIN THROUGH A FLUIDIZABLE BED OF DIVIDED MATERIAL, MAINTAINING THE TEMPERATURE IN THE BED AT A VALUE AT LEAST AS HIGH AS THE BOILING POINT OF A DESIRED DIPHENYL DERAVATIVE, AND REGULATING THE RATE OF THROUGH FLOW OF SAID GASEOUS STREAM SO AS TO MAINTAIN SAID BED IN A STATE OF STATIONARY DENSE FLUIDIZATION.
Claim 2
Independent Claim
93 words
A METHOD OF PREPARATION, IN A SINGLE STAGE OF CHLORINATED DIPHENYL DERIVATIVES HAVING A DEGREE OF CHLORINATION UP TO 100%, SAID METHOD COMPRISING, PASSING A GASEOUS STREAM CONTAINING A CHLORINE GAS INGREDIENT AND A DIPHENYL INGREDIENT AS ESSENTIAL INGREDIENTS THEREIN THROUGH A FLUIDIZABLE BED OF DIVIDED MATERIAL, MAINTAINING THE TEMPERATURE IN THE BED AT A VALUE AT LEAST AS HIGH AS THE BOILING POINT OF A DESIRED DIPHENYL DERAVATIVE, AND REGULATING THE RATE OF THROUGH FLOW OF SAID GASEOUS STREAM SO AS TO MAINTAIN SAID BED IN A STATE OF STATIONARY DENSE FLUIDIZATION.
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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |