US3213547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure and apparatus for drying bleached shellac
Assignee: J P DEVINE Manufacturing CO
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Filing: 1962-12-07
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Granted: 1965-10-26
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Expires: 1982-12-07
Abstract
No abstract record available.
Inventors
- 👤 James L Trettel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:18
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/02; F26B11/04; F26B11/049
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
THE METHOD OF DRYING GRUNULATED BLEACH SHELLAC WHICH COMPRISES THE STEPS OF: (A) COLLECTING AN AMORPHOUS BODY OF GRANULATED WET BLEACHED SHELLC, (B) CONTINUOUSLY-HOMOGENEROUSLY REDISTRIBUTING THE GRANULES WITHIN THE AMORPHOUS BODY, WHILE (C) SUBJECTING THE BODY OF A LOW SUB-ATMOSPHERIC PRESSURE, AND (D) HEATING THE BODY BY CONDUCTION AND RADIATION FROM A SURFACE HAVING A TEMPERATURE THAT IS PROGRESSIVELY VARIED AS A FUNCTION OF TIME, FROM AN INITIAL TEMPERATUR OF 80* TO 90*F., TO BETWEEN 95* TO 120*F. THROUGHOUT THE FIRST THREE HOURS OF DRYING AND IS THEN HELD AT BETWEEN 95* AND 120*F. UNTIL DRYING IS COMPLETED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |