US2563442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
•
Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:21
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/04; C01B15/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR THE MANUFACTURE OF ZINC PEROXIDE WHICH COMPRISES ADDING A ZINC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE AND ZINC HYDROXIDE TO A 10 TO 15% BY WEIGHT AQUEOUS SOLUTION OF HYDROGEN PEROXIDE CONTAINING FROM 2 TO 25 GMS. PER LITAER OF SOLUTION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE ZINC SALTS AND ACIDS WHICH FORM WATER SOLUBLE ZINC SALTS, SO CONTROLLING THE RATE OF ADDITION OF THE ZINC COMPOUND AS TO MAINTAIN THE TEMPERATURE IN THE REACTION ZONE BETWEEN 30 AND 70* C., AND CONTINUING SAID ADDITIONS UNTIL THE PROPORTION BY WEIGHT OF ZINC COMPOUND CALCULATED AS ZINC PEROXIDE EQUALS FROM ONE-THIRD TO ONE-SEVENTH OF THE WEIGHT OF THE SOLUTION, AND THEREBY PRODUCING A GRANULAR PRECIPITATE OF ZINC PEROXIDE.
Claim 2
Dependent Claim
128 words
A PROCESS FOR THE MANUFACTURE OF ZINC PEROXIDE WHICH COMPRISES ADDING A ZINC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE AND ZINC HYDROXIDE TO A 10 TO 15% BY WEIGHT AQUEOUS SOLUTION OF HYDROGEN PEROXIDE CONTAINING FROM 2 TO 25 GMS. PER LITAER OF SOLUTION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE ZINC SALTS AND ACIDS WHICH FORM WATER SOLUBLE ZINC SALTS, SO CONTROLLING THE RATE OF ADDITION OF THE ZINC COMPOUND AS TO MAINTAIN THE TEMPERATURE IN THE REACTION ZONE BETWEEN 30 AND 70* C., AND CONTINUING SAID ADDITIONS UNTIL THE PROPORTION BY WEIGHT OF ZINC COMPOUND CALCULATED AS ZINC PEROXIDE EQUALS FROM ONE-THIRD TO ONE-SEVENTH OF THE WEIGHT OF THE SOLUTION, AND THEREBY PRODUCING A GRANULAR PRECIPITATE OF ZINC PEROXIDE.
References Cited (Backward Citations)
US2304104A
Cited
US2393891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |