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US2863305A Expired / Lapsed US ⏱️ 0.0 years remaining

Refrigerant article and composition

Assignee: Individual
•
Filing: 1953-08-10
•
Granted: 1958-12-09
•
Expires: 1973-08-10
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Abstract

No abstract record available.

Inventors

  • 👤 John C Shepherd

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 08:06
CPC Classifications
C; C09; C09K; C09K5/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 145 words
AN ARTICLE OF MANUFACTURE FROM WHICH A PACKAGED REFRIGERANT CAN BE PREPARED BY SIMPLY ADDING WATER AND SHAKING, COMPRISING A PREGELATINIZED STARCH MIXED WITH BORAX AND A WATER-HATING AGENT; AND AN OVERSIZED FLEXIBLE OPEN-END TRANSPARENT BAG MADE FROM WATERPROOF MATERIAL AND ABLE TO HOLD BETWEEN 3 AND 20 TIMES AS MUCH WATER BY WEIGHT AS THE STARCH THEREIN AND MARKED WITH A FIRST INDICATING LINE TO INDICATE THE CORRECT PROPORTION OF WATER TO BE ADDED AND HAVING A FLEXIBLE PORTION BEYOND SAID MARKING LINE, WITH A SECOND LINE INDICATING A FOLD LINE ABLE TO PROVIDE THE VOID SPACE NECESSARY FOR MIXING, WHEREBY THE CONTAINER CAN BE FOLDED OVER AT THE SECOND LINE AND CLOSED TIGHTLY ENOUGH TO PREVENT LEAKAGE THEREFROM, WHILE SHAKING THE PACKAGE WITH THE ADDITION OF WATER, AND CAN LATER BE FOLDED OVER TO THE FIRST LINE FOR PERMANENT HOLDING OF THE GEL.
Claim 2
Dependent Claim 145 words
AN ARTICLE OF MANUFACTURE FROM WHICH A PACKAGED REFRIGERANT CAN BE PREPARED BY SIMPLY ADDING WATER AND SHAKING, COMPRISING A PREGELATINIZED STARCH MIXED WITH BORAX AND A WATER-HATING AGENT; AND AN OVERSIZED FLEXIBLE OPEN-END TRANSPARENT BAG MADE FROM WATERPROOF MATERIAL AND ABLE TO HOLD BETWEEN 3 AND 20 TIMES AS MUCH WATER BY WEIGHT AS THE STARCH THEREIN AND MARKED WITH A FIRST INDICATING LINE TO INDICATE THE CORRECT PROPORTION OF WATER TO BE ADDED AND HAVING A FLEXIBLE PORTION BEYOND SAID MARKING LINE, WITH A SECOND LINE INDICATING A FOLD LINE ABLE TO PROVIDE THE VOID SPACE NECESSARY FOR MIXING, WHEREBY THE CONTAINER CAN BE FOLDED OVER AT THE SECOND LINE AND CLOSED TIGHTLY ENOUGH TO PREVENT LEAKAGE THEREFROM, WHILE SHAKING THE PACKAGE WITH THE ADDITION OF WATER, AND CAN LATER BE FOLDED OVER TO THE FIRST LINE FOR PERMANENT HOLDING OF THE GEL.

References Cited (Backward Citations)

CA440385A Cited
US1742472A Cited
US1752371A Cited
US1550650A Cited
US1782526A Cited
US1904222A Cited
US1973613A Cited
US2276220A Cited
US2442658A Cited
US2613206A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-12-08 1962-06-09 1962-12-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-12-08 1966-06-09 1966-12-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-12-08 1970-06-09 1970-12-09 $7700.00 Window Closed / Lapsed

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