Patent US3060105A successfully refreshed from Google Patents.
US3060105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentration of hydrogen peroxide
Assignee: Evonik Operations GmbH
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Filing: 1957-07-15
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Granted: 1962-10-23
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Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 Muller Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:11
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FRO THE CONCENTRATION AND PURIFICATION OF DILUTE AQUEOUS HYDROGEN PEROXIDE SOLUTIONS WHICH COMPRISES PARTIALLY VAPORIZING A DILUTE AQUEOUS HYDROGEN PEROXIDE SOLUTION IN A FIRST STEP, PASSING THE VAPORS COUNTERCURRENTLY TO AN AQUEOUS HYDROGEN PEROXIDE SOLUTION OF ABOUT THE SAME CONCENTRATION AS THE HYDROGEN PEROXIDE VAPORIZED IN SAID FIRST STEP IN A DEPHLEGMATOR TO PRODUCE A MORE CONCENTRATED HYDROGEN PEROXIDE SOLUTION, TOTALLY VAPORIZING SUCH MORE CONCENTRATED SOLUTION ONCE IN A SEPARATE HEATING TUBE, DIRECTLY PASSING THE THUS OBTAINED VAPORS THROUGH A RECTIFICATION COLUMN AND COOLING THE HEAD OF SUCH RECTIFYING COLUMN FRACTIONALLY TO CONDENSE A STILL MORE CONCENTRATED HYDROGEN PEROXIDE.
Claim 2
Dependent Claim
101 words
A PROCESS FRO THE CONCENTRATION AND PURIFICATION OF DILUTE AQUEOUS HYDROGEN PEROXIDE SOLUTIONS WHICH COMPRISES PARTIALLY VAPORIZING A DILUTE AQUEOUS HYDROGEN PEROXIDE SOLUTION IN A FIRST STEP, PASSING THE VAPORS COUNTERCURRENTLY TO AN AQUEOUS HYDROGEN PEROXIDE SOLUTION OF ABOUT THE SAME CONCENTRATION AS THE HYDROGEN PEROXIDE VAPORIZED IN SAID FIRST STEP IN A DEPHLEGMATOR TO PRODUCE A MORE CONCENTRATED HYDROGEN PEROXIDE SOLUTION, TOTALLY VAPORIZING SUCH MORE CONCENTRATED SOLUTION ONCE IN A SEPARATE HEATING TUBE, DIRECTLY PASSING THE THUS OBTAINED VAPORS THROUGH A RECTIFICATION COLUMN AND COOLING THE HEAD OF SUCH RECTIFYING COLUMN FRACTIONALLY TO CONDENSE A STILL MORE CONCENTRATED HYDROGEN PEROXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |