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US2614922A Expired / Lapsed US ⏱️ 0.0 years remaining

Methods of dewaxing paper

Assignee: R H COMEY Co Inc
•
Filing: 1947-11-13
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Granted: 1952-10-21
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Expires: 1967-11-13
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Abstract

No abstract record available.

Inventors

  • 👤 Henry B Hope

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 20:39
CPC Classifications
D; D21; D21C; D21C5/00; D21C5/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/64

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 188 words
THE PROCESS FOR RECLAIMING WAX-PAPER PRODUCTS WHICH COMPRISES, IN COMBINATION, DIGESTING A QUANTITY OF SUCH PRODUCTS IN A FIRST BATH COMPRISING AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 0.4% TO ABOUT 1.9% OF AN ORGANIC SULFONATED WETTING-DETERGENT-SCOURING AGENT, SELECTED FROM THE GROUP CONSISTING OF ALKALI-METAL ALKYL SULFONATES AND ALKALI-METAL ALKYL ARYL SULFONATES, AND SUFFICIENT STRONG ACID TO YIELD A PH NUMBER OF FROM APPROXIMATELY PH 1.3 TO ABOUT PH 2, AT A TEMPERATURE OF FROM ABOUT 70* C. TO ABOUT 100* C., FOR FROM ABOUT FIFTEEN MINUTES TO ABOUT FIVE HOURS, WHEREBY THE WAXY CONSTITUENT IS FOR THE MOST PART SEPARATED FROM THE PRODUCT, AND RISES TO THE SURFACE OF THE BATH SKIMMING THE WAX FROM THE SURFACE; DRAINING THE PRODUCT FROM THE FIRST BATH, AND TREATING IT IN A SECOND BATH COMPRISING AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 0.03% TO ABOUT 0.2% OF A GAS EVOLVING BLEACHING AGNET AT APPROXIMATELY 70* C., FOR FROM ABOUT TEN MINUTES TO ABOUT FIFTEEN MINUTES, WHEREBY REMANENT WAX IS DISLODGED FROM THE PRODUCT AND RISES TO THE SURFACE BATH; SKIMMING OFF THE WAX; AND FINALLY RINSING THE WAX-FREE PAPER PRODUCT WITH WATER.

References Cited (Backward Citations)

US977013A Cited
US1410739A Cited
US1431553A Cited
US1703830A Cited
US1968795A Cited
US1993362A Cited
US2072487A Cited
US2186609A Cited
US2181785A Cited
US2253368A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1955-10-21 1956-04-21 1956-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1959-10-21 1960-04-21 1960-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1963-10-21 1964-04-21 1964-10-21 $7700.00 Window Closed / Lapsed

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