US3437629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated polymerized dac-b
Assignee: Eastman Kodak Co
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Filing: 1964-01-13
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Granted: 1969-04-08
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Paul T Von Bramer
- 👤 Charles W Hequembourg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:29
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
AN ORGANIC COMPOSITION PREPARED BY HYDROGENATING, WITHOUT PRIOR SEPARATION INTO SOLID AND LIQUID PORTIONS AND AT AN ELEVATED TEMPERATURE AND PRESSURE N THE PRESENCE OF A METALLIC HYDROGENATION CATALYST, A CRUDE POLYMER SELECTED FROM THE GROUP CONSISTING OF: (A) THE CRUDE HOMOPOLYMER PREPARED BY POLYMERIZING DAC-B IN THE PRESENCE OF AN APROTONIC LEWIS ACIS POLYMERIZATION CATALYST AND (B) THE CRUDE COPOLYMER PREPARED BY COPOLYMERIZING DAC-B AND AN ETHYLENICALLY UNSATURATED DIACYL MONOMER IN THE PRESENCE OF AN APROTONIC LEWIS ACIE POLYMERIZATION CATALYST, WHEREIN SAID DAC-B IS THE LIQUID RESIDUAL FRACTION OF THE DEBUTANIZED RESIDUE FROM THE PYROLYSIS AT A TEMPERATURE OF ABOUT 700 TO ABOUT 800*C. AND A PRSSURE OF ABOUT 10 TO ABOUT 75 POUNDS PER SQUARE INCH GAUGE FOR A PERIOD OF ABOUT ONE SECOND OF A NATURAL GAS STREAM PREDOMINANTLY COMPRISING PROPANE, SAID LIQUID RESIDUAL FRACTION HAVING AN INITIAL BOILING POINT GREATER THAN ABOUT 60*C., AN IODINE NUMBER OF ABOUT 195 TO ABOUT 275, AND CONTAINING ABOUT 87 TO ABOUT 91 PERCENT CARBON AND ABOUT 9 TO ABOUT 13 PERCENT HYDROGEN, AND CAPABLE OF BEING SEPARATED INTO THREE PORTIONS BY DISTILLING WITHOUT HEATING AT 0.1 MM. PRESSURE.
Claim 2
Dependent Claim
189 words
AN ORGANIC COMPOSITION PREPARED BY HYDROGENATING, WITHOUT PRIOR SEPARATION INTO SOLID AND LIQUID PORTIONS AND AT AN ELEVATED TEMPERATURE AND PRESSURE N THE PRESENCE OF A METALLIC HYDROGENATION CATALYST, A CRUDE POLYMER SELECTED FROM THE GROUP CONSISTING OF: (A) THE CRUDE HOMOPOLYMER PREPARED BY POLYMERIZING DAC-B IN THE PRESENCE OF AN APROTONIC LEWIS ACIS POLYMERIZATION CATALYST AND (B) THE CRUDE COPOLYMER PREPARED BY COPOLYMERIZING DAC-B AND AN ETHYLENICALLY UNSATURATED DIACYL MONOMER IN THE PRESENCE OF AN APROTONIC LEWIS ACIE POLYMERIZATION CATALYST, WHEREIN SAID DAC-B IS THE LIQUID RESIDUAL FRACTION OF THE DEBUTANIZED RESIDUE FROM THE PYROLYSIS AT A TEMPERATURE OF ABOUT 700 TO ABOUT 800*C. AND A PRSSURE OF ABOUT 10 TO ABOUT 75 POUNDS PER SQUARE INCH GAUGE FOR A PERIOD OF ABOUT ONE SECOND OF A NATURAL GAS STREAM PREDOMINANTLY COMPRISING PROPANE, SAID LIQUID RESIDUAL FRACTION HAVING AN INITIAL BOILING POINT GREATER THAN ABOUT 60*C., AN IODINE NUMBER OF ABOUT 195 TO ABOUT 275, AND CONTAINING ABOUT 87 TO ABOUT 91 PERCENT CARBON AND ABOUT 9 TO ABOUT 13 PERCENT HYDROGEN, AND CAPABLE OF BEING SEPARATED INTO THREE PORTIONS BY DISTILLING WITHOUT HEATING AT 0.1 MM. PRESSURE.
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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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |