US3177276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparation of embossed thermoplastic sheet and composition for producing same
Assignee: Phillips Petroleum Co
•
Filing: 1958-06-06
•
Granted: 1965-04-06
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Doyle Robert
- 👤 Paul J Boeke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:29
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/01; C08K3/013; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD FOR PREPARATION OF EMBOSSED EXTRUDED SOLID SHEET OF NONHYGROSCOPIC THERMOPLASTIC MATERIAL WHICH COMPRISES UNIFORMLY DISPERSING IN SAID MATERIAL PRIOR TO EXTRUSION WATER AND A WATER DISPERSING MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBON BLACK, SILICA GEL, AMMONIUM FERRIC SULFATE, CALCIUM CHROMATE, CALCIUM (D-1) TARTRATE, MAGNESIUM BROMATE, MAGNESIUM SULFITE AND POTASSIUM SODIUM TARTRATE, ELEVATING THE TEMPERATURE OF THE ADMIXTURE ABOVE THE BOILING POINT OF WATER AT THE CONDITIONS PREVALILING IN THE EXTRUSION ZONE AND ABOVE THE SOFTENING POINT OF THE THERMOPLASTIC MATERIAL AND EXTRUDING THE DISPERSION.
Claim 2
Independent Claim
88 words
A METHOD FOR PREPARATION OF EMBOSSED EXTRUDED SOLID SHEET OF NONHYGROSCOPIC THERMOPLASTIC MATERIAL WHICH COMPRISES UNIFORMLY DISPERSING IN SAID MATERIAL PRIOR TO EXTRUSION WATER AND A WATER DISPERSING MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBON BLACK, SILICA GEL, AMMONIUM FERRIC SULFATE, CALCIUM CHROMATE, CALCIUM (D-1) TARTRATE, MAGNESIUM BROMATE, MAGNESIUM SULFITE AND POTASSIUM SODIUM TARTRATE, ELEVATING THE TEMPERATURE OF THE ADMIXTURE ABOVE THE BOILING POINT OF WATER AT THE CONDITIONS PREVALILING IN THE EXTRUSION ZONE AND ABOVE THE SOFTENING POINT OF THE THERMOPLASTIC MATERIAL AND EXTRUDING THE DISPERSION.
References Cited (Backward Citations)
US2167514A
Cited
US2336944A
Cited
US2442598A
Cited
US2482094A
Cited
US2504780A
Cited
US2446771A
Cited
US2536048A
Cited
US2528200A
Cited
US2512459A
Cited
US2692245A
Cited
US2700655A
Cited
US2798258A
Cited
US2772322A
Cited
US2888424A
Cited
US2904844A
Cited
US2909810A
Cited
US2972780A
Cited
US3066356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |