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US2665258A Expired / Lapsed US ⏱️ 0.0 years remaining

Bead forming process

Assignee: Houdry Process Corp
•
Filing: 1950-09-29
•
Granted: 1954-01-05
•
Expires: 1970-09-29
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Abstract

No abstract record available.

Inventors

  • 👤 Jr Edward H Lebeis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 07:24
CPC Classifications
B; B01; B01J; B01J21/00; B01J13/00; C; C11; C11C; C11C3/00; C11C3/12

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 172 words
THE METHOD OF PREPARING INORGANIC GEL BEADS WHICH COMPRISES ADMIXING POWDERED GEL DERIVED FROM THE PROCESS WITH REACTANTS PRODUCING A GELABLE HYDROSOL, DISCHARGING THE THUS PRODUCED POWDER-CONTAINING HYDROSOL INTO A BODY OF WATERIMMISCIBLE LIQUID WHEREIN AS A RESULT OF INTERFACIAL TENSION THE HYDROSOL IS DIVIDED INTO GLOBULES WHICH SET TO HYDROGEL IN SAID IMMISCIBLE LIQUID, CLASSIFYING THE HYDROGEL GLOBULES THUS PRODUCED TO SEPARRATE THOSE OF SELECTED SIZE RANGE AND REJECTING OFFSIZE GLOBULES, DRYING THE OFFSIZE GLOBULES AT A RATE SUFFICIENTLY RAPID TO FORM A FRANGIBLE EASILY COMMINUTED STRUCTURE AND GRINDING THE SAME TO POWDER OF DESIRED SIZE RANGE TO PROVIDE THE AFORESAID POWDERED GEL INITIALLY ADMIXED WITH REACTANTS, RECYCLING SAID POWDER FOR ADMIXING WITH SAID GELABLE HYDROSOL-PRODUCING REACTANTS, PARTIALLY DRYING SAID GLOBULES OF SELECTED SIZE RANGE TO REDUCE THE VOLUME THEREOF AND TO A RESIDUAL MOISTURE CONTENT PERMITTING REWETTING WITHOUT SUBSTANTIAL BREAKAGE, TREATING THE PARTIALLY DRIED GLOBULES WITH AQUEOUS LIQUID TO PURIFY THE SAME, AND CAREFULLY DRYING THE PURIFIED GLOBULES UNDER CONDITIONS INCLUDING CONTROLLED HUMIDITY TO OBTAIN BEADS OF GOOD PHYSICAL STRENGTH.
Claim 2
Independent Claim 172 words
THE METHOD OF PREPARING INORGANIC GEL BEADS WHICH COMPRISES ADMIXING POWDERED GEL DERIVED FROM THE PROCESS WITH REACTANTS PRODUCING A GELABLE HYDROSOL, DISCHARGING THE THUS PRODUCED POWDER-CONTAINING HYDROSOL INTO A BODY OF WATERIMMISCIBLE LIQUID WHEREIN AS A RESULT OF INTERFACIAL TENSION THE HYDROSOL IS DIVIDED INTO GLOBULES WHICH SET TO HYDROGEL IN SAID IMMISCIBLE LIQUID, CLASSIFYING THE HYDROGEL GLOBULES THUS PRODUCED TO SEPARRATE THOSE OF SELECTED SIZE RANGE AND REJECTING OFFSIZE GLOBULES, DRYING THE OFFSIZE GLOBULES AT A RATE SUFFICIENTLY RAPID TO FORM A FRANGIBLE EASILY COMMINUTED STRUCTURE AND GRINDING THE SAME TO POWDER OF DESIRED SIZE RANGE TO PROVIDE THE AFORESAID POWDERED GEL INITIALLY ADMIXED WITH REACTANTS, RECYCLING SAID POWDER FOR ADMIXING WITH SAID GELABLE HYDROSOL-PRODUCING REACTANTS, PARTIALLY DRYING SAID GLOBULES OF SELECTED SIZE RANGE TO REDUCE THE VOLUME THEREOF AND TO A RESIDUAL MOISTURE CONTENT PERMITTING REWETTING WITHOUT SUBSTANTIAL BREAKAGE, TREATING THE PARTIALLY DRIED GLOBULES WITH AQUEOUS LIQUID TO PURIFY THE SAME, AND CAREFULLY DRYING THE PURIFIED GLOBULES UNDER CONDITIONS INCLUDING CONTROLLED HUMIDITY TO OBTAIN BEADS OF GOOD PHYSICAL STRENGTH.

References Cited (Backward Citations)

US2147985A Cited
US2384944A Cited
US2433869A Cited
US2487065A Cited
US2528767A Cited
US2453084A Cited
US2588402A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1957-01-04 1957-07-06 1958-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1961-01-04 1961-07-06 1962-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1965-01-04 1965-07-06 1966-01-05 $7700.00 Window Closed / Lapsed

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