US2614922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of dewaxing paper
Assignee: R H COMEY Co Inc
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Filing: 1947-11-13
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Granted: 1952-10-21
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Expires: 1967-11-13
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
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US1410739A
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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) | 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 |