US3423489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulation process
Assignee: 3M Co
•
Filing: 1966-11-01
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Granted: 1969-01-21
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Expires: 1986-11-01
Abstract
No abstract record available.
Inventors
- 👤 Robert P Arens
- 👤 Norman P Sweeny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:54
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/04; B01J13/046; A; A61; A61J; A61J3/00; A61J3/07; B29; B29C; B29C70/00; B29C70/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR FORMING CAPSULES WHICH COMPRISES PROVIDING A BILIQUID COLUMN COMPRISING AN OUTER TUBE OF CAPSULE SHELL FORMING MATERIAL AND A CORE OF FILL MATERIAL TO BE ENCAPSULATED, SAID COLUMN BEING DIRECTED IN A TRAJECTORY HAVING A HORIZONTAL COMPONENT FOR A TIME SUFFICIENT FOR THE COLUMN TO CONSTRICT ALONG ITS LENGTH INTO SHPEROIDS OF SHELL FORMING MATERIAL EACH ENCLOSING A CORE OF FILL MATERIAL, AND HARDENING SAID SHELL-FORMING MATERIAL INTO SOLID SHELLS ENCAPSULATING SAID FILL MATERIAL THEREWITHIN.
Claim 2
Dependent Claim
78 words
A PROCESS FOR FORMING CAPSULES WHICH COMPRISES PROVIDING A BILIQUID COLUMN COMPRISING AN OUTER TUBE OF CAPSULE SHELL FORMING MATERIAL AND A CORE OF FILL MATERIAL TO BE ENCAPSULATED, SAID COLUMN BEING DIRECTED IN A TRAJECTORY HAVING A HORIZONTAL COMPONENT FOR A TIME SUFFICIENT FOR THE COLUMN TO CONSTRICT ALONG ITS LENGTH INTO SHPEROIDS OF SHELL FORMING MATERIAL EACH ENCLOSING A CORE OF FILL MATERIAL, AND HARDENING SAID SHELL-FORMING MATERIAL INTO SOLID SHELLS ENCAPSULATING SAID FILL MATERIAL THEREWITHIN.
References Cited (Backward Citations)
US2932061A
Cited
US3202533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |