Patent US3167602A successfully refreshed from Google Patents.
US3167602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of encapsulating liquid particles in thermoplastic shell
Assignee: Aro Corp
•
Filing: 1962-03-12
•
Granted: 1965-01-26
•
Expires: 1982-03-12
Abstract
No abstract record available.
Inventors
- 👤 Bentov Itzhak
- 👤 Robert M Jolkovski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD FOR ENCAPSULATING LIQUID PARTICLES IN A PROTECTIVE SHELL OF THERMOPLASTIC MATERIAL WHICH COMPRISES PROVIDING A THIN MOLTEN LAYER OF SAID THERMOPLASTIC MATERIAL SUPPORTED BY A BATH HAVING A SPECIFIC GRAVITY HIGHER THAN THE SPECIFIC GRAVITY OF SAID THERMOPLASTIC MATERIAL, WHICH BATH IS MAINTAINED AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID THERMOPLASTIC MATERIAL AT ITS UPPER SURFACE AND AT A TEMPERATURE BELOW THE MELTING POINT OF SAID THERMOPLASTIC MATERIAL IN A COOLING ZONE BELOW SAID UPPER SURFACE, DISCHARGING SAID LIQUID PARTICLES FROM A POINT ABOVE SAID MOLTEN LAYER UNDER THE INFLUENCE OF GRAVITY SO THAT THEY STRIKE SAID MOLTEN LAYER WITH SUFFICIENT KINETIC ENERGY TO PASS INTACT THROUGH SAID LAYER AND INTO SAID COOLING ZONE, WHEREBY SAID PARTICLES BECOME ENCAPSULATED IN A THIN SOLID PROTECTIVE SHELL OF THERMOPLASTIC MATERIAL.
Claim 2
Independent Claim
132 words
A METHOD FOR ENCAPSULATING LIQUID PARTICLES IN A PROTECTIVE SHELL OF THERMOPLASTIC MATERIAL WHICH COMPRISES PROVIDING A THIN MOLTEN LAYER OF SAID THERMOPLASTIC MATERIAL SUPPORTED BY A BATH HAVING A SPECIFIC GRAVITY HIGHER THAN THE SPECIFIC GRAVITY OF SAID THERMOPLASTIC MATERIAL, WHICH BATH IS MAINTAINED AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID THERMOPLASTIC MATERIAL AT ITS UPPER SURFACE AND AT A TEMPERATURE BELOW THE MELTING POINT OF SAID THERMOPLASTIC MATERIAL IN A COOLING ZONE BELOW SAID UPPER SURFACE, DISCHARGING SAID LIQUID PARTICLES FROM A POINT ABOVE SAID MOLTEN LAYER UNDER THE INFLUENCE OF GRAVITY SO THAT THEY STRIKE SAID MOLTEN LAYER WITH SUFFICIENT KINETIC ENERGY TO PASS INTACT THROUGH SAID LAYER AND INTO SAID COOLING ZONE, WHEREBY SAID PARTICLES BECOME ENCAPSULATED IN A THIN SOLID PROTECTIVE SHELL OF THERMOPLASTIC MATERIAL.
References Cited (Backward Citations)
US2339114A
Cited
US1378084A
Cited
US1762693A
Cited
US2468060A
Cited
US2471358A
Cited
US2574317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |