US2602073A
Expired / Lapsed
US
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Process for preparing solutions
Assignee: Hexion Inc
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Filing: 1949-05-09
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Granted: 1952-07-01
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Expires: 1969-05-09
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:57
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; D; D01; D01D; D01D1/00; D01D1/10; D01D1/103; C08J2357/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
1. A DISSOLVING PROCESS COMPRISING THE STEPS, IN COMBINATION, OF PULVERIZING A SOLUBLE RESIN TO INCREASE THE SURFACE THEREOF WHEREBY SOLUTION RATE IS FACILITATED AND ADSORPTION OF AIR IS INCREASED, SUBMERGING THE PULVERIZED RESIN IN A SIMPLE SOLVENT, AND SIMULTANEOUSLY BEGINING SOLUTION OF SAID PULVERIZED RESIN AND APPLYING A VACUUM ON THE SURFACE OF SAID SOLVENT WHEREBY THE COMBINED VACUUM AND SURFACE DISSOLVING FORCES SIMULTANEOUSLY ACT TO REMOVE ADSORBED AIR FROM THE SURFACES OF SAID PULVERIZED RESIN AT SULFFICIENT SPEED TO PERMIT OF REMOVAL OF SUBSTANTIALLY ALL AIR BUBBLES FROM THE SOLVENT BEFORE SUFFICIENT RESIN IS DISSOLVED TO PRODUCE FOAMING OF THE SOLUTION.
Claim 2
Dependent Claim
103 words
1. A DISSOLVING PROCESS COMPRISING THE STEPS, IN COMBINATION, OF PULVERIZING A SOLUBLE RESIN TO INCREASE THE SURFACE THEREOF WHEREBY SOLUTION RATE IS FACILITATED AND ADSORPTION OF AIR IS INCREASED, SUBMERGING THE PULVERIZED RESIN IN A SIMPLE SOLVENT, AND SIMULTANEOUSLY BEGINING SOLUTION OF SAID PULVERIZED RESIN AND APPLYING A VACUUM ON THE SURFACE OF SAID SOLVENT WHEREBY THE COMBINED VACUUM AND SURFACE DISSOLVING FORCES SIMULTANEOUSLY ACT TO REMOVE ADSORBED AIR FROM THE SURFACES OF SAID PULVERIZED RESIN AT SULFFICIENT SPEED TO PERMIT OF REMOVAL OF SUBSTANTIALLY ALL AIR BUBBLES FROM THE SOLVENT BEFORE SUFFICIENT RESIN IS DISSOLVED TO PRODUCE FOAMING OF THE SOLUTION.
References Cited (Backward Citations)
US1895192A
Cited
US2469546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |