← Back to Patent Explorer
US2855324A Expired / Lapsed US ⏱️ 0.0 years remaining

van dorn

Assignee: —
•
Filing: 1955-04-07
•
Granted: 1958-10-07
•
Expires: 1975-04-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 21:10
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/002; G03G7/0026; G03G7/0046; G03G13/00; G03G13/14; G03G13/16; G03G7/004; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 252 words
A METHOD OF TRANSFER FOR XEROGRAPHUC POWDER IMAGE BODIES ON A SUPORT MEMBER COMPRISING PROVIDING A BASE MEMBER HAVING A COATING OF A RESIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENES WHOSE MOLECULAR WEIGHTS RANGE FROM ABOUT 4,000 TO ABOUT 19,000; POLYAMIDES OBTAINED BY REACTING TOGETHER AT A HIGH TEMPERATURE SUBSTANTIALLY EQUIMOLAR PROPORTIONS OF AN ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC AND ISOPHATHALIC ACID WITH A COMBINATION OF A PLURALITY OF POLYGLYCOLS HAVING AN AVERAGE OF AT LEAST TWO ETHER LINKAGES AND AT LEAST ONE NON-CYCLIZABLE PRIMARY AMINO MONOALKANOLAMINE HAVING A NON-TERTIARY CARBON ATOM ATTACHED TO THE NITROGEN ATOM, THE POLYGLYCOLS AND MONOALKANOLAMINES BEING SO SELECTED AND PROPORTIONED AS TO PROVIDE AN AVERAGE OF ABOUT 3-12 ETHER LINKAGES AND ONE AMIDO GROUP HAVING A SINGLE HYDROGEN ATOM ATACHED TO THE NITROGEN ATOM FOR APPROXIMATELY EACH 25-90 ATOMS IN THE SKELTAL POLYMER CHAIN; AND MIXTURES OF POLYETHYLENES HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 4,000 WITH UP TO 40% BY WEIGHT OF REFINED MICROCYSTALLINE WAX, SAID COATING BEING SUBSTANTIALLY NON-TACKY AT ROOM TEMPERATURE, CONTACTING THE COATING ON SAID BASE MEMBER WITH THE POWDER IMAGE ON SAID SUPPORT MEMBER AND PRESSING SAID COATING AND IMAGE TOGETHER TO THEREBY TRANSFER SAID POWDER IMAGE TO SAID RESIN COATING AT SUBSTANTIALLY ROOM TEMPERATURE AND REMOVING SAID BASE MEMBER WITH ITS COATING FROM CONTACT WITH SAID SUPPORT MEMBER WHEREBY THE IMAGE BODIES ARE TRANSFERRED FROM THE SUPPORT MEMBER TO THE BASE MEMBER IN FAITHFUL CONFORMITY TO THEIR ORIGINAL CONFIGURATION WITHOUT DAMAGE TO THE SUPPORT MEMBER.
Claim 2
Independent Claim 252 words
A METHOD OF TRANSFER FOR XEROGRAPHUC POWDER IMAGE BODIES ON A SUPORT MEMBER COMPRISING PROVIDING A BASE MEMBER HAVING A COATING OF A RESIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENES WHOSE MOLECULAR WEIGHTS RANGE FROM ABOUT 4,000 TO ABOUT 19,000; POLYAMIDES OBTAINED BY REACTING TOGETHER AT A HIGH TEMPERATURE SUBSTANTIALLY EQUIMOLAR PROPORTIONS OF AN ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC AND ISOPHATHALIC ACID WITH A COMBINATION OF A PLURALITY OF POLYGLYCOLS HAVING AN AVERAGE OF AT LEAST TWO ETHER LINKAGES AND AT LEAST ONE NON-CYCLIZABLE PRIMARY AMINO MONOALKANOLAMINE HAVING A NON-TERTIARY CARBON ATOM ATTACHED TO THE NITROGEN ATOM, THE POLYGLYCOLS AND MONOALKANOLAMINES BEING SO SELECTED AND PROPORTIONED AS TO PROVIDE AN AVERAGE OF ABOUT 3-12 ETHER LINKAGES AND ONE AMIDO GROUP HAVING A SINGLE HYDROGEN ATOM ATACHED TO THE NITROGEN ATOM FOR APPROXIMATELY EACH 25-90 ATOMS IN THE SKELTAL POLYMER CHAIN; AND MIXTURES OF POLYETHYLENES HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 4,000 WITH UP TO 40% BY WEIGHT OF REFINED MICROCYSTALLINE WAX, SAID COATING BEING SUBSTANTIALLY NON-TACKY AT ROOM TEMPERATURE, CONTACTING THE COATING ON SAID BASE MEMBER WITH THE POWDER IMAGE ON SAID SUPPORT MEMBER AND PRESSING SAID COATING AND IMAGE TOGETHER TO THEREBY TRANSFER SAID POWDER IMAGE TO SAID RESIN COATING AT SUBSTANTIALLY ROOM TEMPERATURE AND REMOVING SAID BASE MEMBER WITH ITS COATING FROM CONTACT WITH SAID SUPPORT MEMBER WHEREBY THE IMAGE BODIES ARE TRANSFERRED FROM THE SUPPORT MEMBER TO THE BASE MEMBER IN FAITHFUL CONFORMITY TO THEIR ORIGINAL CONFIGURATION WITHOUT DAMAGE TO THE SUPPORT MEMBER.

References Cited (Backward Citations)

US122636A Cited
US2153553A Cited
US2221776A Cited
US2297691A Cited
US2353717A Cited
US2443799A Cited
US2556078A Cited
US2471102A Cited
US2693416A Cited
US2661289A Cited
US2714571A Cited
US2706719A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-10-06 1962-04-07 1962-10-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-10-06 1966-04-07 1966-10-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-10-06 1970-04-07 1970-10-07 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag