US2677504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of mixing, vacuum drying, and pulverizing an ortho-cellutone dye
Assignee: Struthers Wells Corp
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Filing: 1952-05-09
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Granted: 1954-05-04
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Expires: 1972-05-09
Abstract
No abstract record available.
Inventors
- 👤 John B Klingel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:21
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0003; C09B67/0096; Y; Y10; Y10S; Y10S241/00; Y10S241/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF MIXING, DRYING AND PULVERIZING AN ORTHO-CELLUTONE DYE IN A WATER SUSPENSION CONTAINING A DISPERSION AGENT, WHICH METHOD COMPRISES PLACING SAID MATERIAL IN A CONTAINER, AGITATING AND DRYING SAID MATERIAL WHILE IN SAID CONTAINER UNTIL THE MATERIAL IN SAID CONTAINER APPROACHES A STATE OF SUBSTANTIALLY COMPLETE DRYNESS, DISCONTINUING SAID AGITATING AND APPLYING A HIGH VACUUM TO SAID CONTAINER TO COMPLETE SUBSTANTIALLY THE DRYING OF SAID MATERIAL AND FLUFFING THEREOF INTO A CELLULAR MASS, AND THEREAFTER RESUMMING THE SAID AGITATING OF SAID MATERIAL WHILE IN SAID CONTAINER TO PULVERIZE THE MATERIAL.
Claim 2
Independent Claim
92 words
THE METHOD OF MIXING, DRYING AND PULVERIZING AN ORTHO-CELLUTONE DYE IN A WATER SUSPENSION CONTAINING A DISPERSION AGENT, WHICH METHOD COMPRISES PLACING SAID MATERIAL IN A CONTAINER, AGITATING AND DRYING SAID MATERIAL WHILE IN SAID CONTAINER UNTIL THE MATERIAL IN SAID CONTAINER APPROACHES A STATE OF SUBSTANTIALLY COMPLETE DRYNESS, DISCONTINUING SAID AGITATING AND APPLYING A HIGH VACUUM TO SAID CONTAINER TO COMPLETE SUBSTANTIALLY THE DRYING OF SAID MATERIAL AND FLUFFING THEREOF INTO A CELLULAR MASS, AND THEREAFTER RESUMMING THE SAID AGITATING OF SAID MATERIAL WHILE IN SAID CONTAINER TO PULVERIZE THE MATERIAL.
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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |