US2889242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing of wallboard
Assignee: Texaco Development Corp
•
Filing: 1955-06-15
•
Granted: 1959-06-02
•
Expires: 1975-06-15
Abstract
No abstract record available.
Inventors
- 👤 Charles F Teichmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
C; C04; C04B; C04B30/00; C04B30/02; D; D21; D21J; D21J1/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD COMPRISING THE STEPS OF MIXING RELATIVELY COARSE FRAGMENTS OF FIBROUS SOLIDS WITH A VAPORIZABLE LIQUID TO FORM A FLOWABLE MIXTURE; CONTINUOUSLY PASSING SAID MIXTURE AS A FLOWING STREAM THROUGH A HEATING ZONE WHEREIN SAID LIQUID IS SUBSTANTIALLY COMPLETELY VAPORIZED TO FORM A CONTINUOUSLY FLOWING DISPERSION OF FRAGMENTS IN VAPOR; SUBJECTING SAID DISPERSION OF FRAGMENTS WHILE FLOWING TO HIGH VELOCITY GREATER THAN 25 FEET PER SECOND AND TURBULENCE THEREBY DISINEGRATING SAID FRAGMENTS TO FINELY DIVIDED FIBERS; AND SUBSEQUENTLY FORMING SAID FIBERS INTO A SHEET.
Claim 2
Independent Claim
85 words
A METHOD COMPRISING THE STEPS OF MIXING RELATIVELY COARSE FRAGMENTS OF FIBROUS SOLIDS WITH A VAPORIZABLE LIQUID TO FORM A FLOWABLE MIXTURE; CONTINUOUSLY PASSING SAID MIXTURE AS A FLOWING STREAM THROUGH A HEATING ZONE WHEREIN SAID LIQUID IS SUBSTANTIALLY COMPLETELY VAPORIZED TO FORM A CONTINUOUSLY FLOWING DISPERSION OF FRAGMENTS IN VAPOR; SUBJECTING SAID DISPERSION OF FRAGMENTS WHILE FLOWING TO HIGH VELOCITY GREATER THAN 25 FEET PER SECOND AND TURBULENCE THEREBY DISINEGRATING SAID FRAGMENTS TO FINELY DIVIDED FIBERS; AND SUBSEQUENTLY FORMING SAID FIBERS INTO A SHEET.
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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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |