US2703754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating waxed paper
Assignee: Individual
•
Filing: 1949-07-27
•
Granted: 1955-03-08
•
Expires: 1969-07-27
Abstract
No abstract record available.
Inventors
- 👤 Myers Robert Evershed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
D; D21; D21C; D21C5/00; D21C5/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS OF TREATING WAXED PAPER TO SEPARATE THE WAX FROM THE PAPER WHICH COMPRISES IMMERSING THE WAXED PAPER IN THE FORM OF PAPER CHIPS IN A CHLORINATED ALIPHATIC HYDROCARBON WHICH IS LIQUID AT ORDINARY TEMPERATURE AND WHICH HAS A VAPOR PRESSURE LESS THAN ABOUT 300 MM. OF MERCURY AT 40* C., AT AN ELEVATED TEMPERATURE BELOW ABOUT 121* C. TO DISSOLVE THE WAX; SEPARATING THE RESULTING SOLUTION OF WAX FROM THE PAPER CHIPS, COOLING SAID SOLUTION TO PRECIPATE AT LEAST A PREPONDERANT PROPORTION OF THE WAX THEREFROM, AND REMOVING THE CHLORINATED HYDROCARBON SOLVENT FROM THE WAX WHICH SEPARATES FROM THE SOLUTION.
Claim 2
Dependent Claim
102 words
THE PROCESS OF TREATING WAXED PAPER TO SEPARATE THE WAX FROM THE PAPER WHICH COMPRISES IMMERSING THE WAXED PAPER IN THE FORM OF PAPER CHIPS IN A CHLORINATED ALIPHATIC HYDROCARBON WHICH IS LIQUID AT ORDINARY TEMPERATURE AND WHICH HAS A VAPOR PRESSURE LESS THAN ABOUT 300 MM. OF MERCURY AT 40* C., AT AN ELEVATED TEMPERATURE BELOW ABOUT 121* C. TO DISSOLVE THE WAX; SEPARATING THE RESULTING SOLUTION OF WAX FROM THE PAPER CHIPS, COOLING SAID SOLUTION TO PRECIPATE AT LEAST A PREPONDERANT PROPORTION OF THE WAX THEREFROM, AND REMOVING THE CHLORINATED HYDROCARBON SOLVENT FROM THE WAX WHICH SEPARATES FROM THE SOLUTION.
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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) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |