US3247572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for obtaining smooth winding surfaces on rough miniature cores
Assignee: AT&T Inc
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Filing: 1962-05-17
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Granted: 1966-04-26
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Expires: 1982-05-17
Abstract
No abstract record available.
Inventors
- 👤 Paul R Munk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:04
CPC Classifications
H; H01; H01F; H01F3/00; H01F3/08; G; G11; G11C; G11C5/00; H01F41/00; H01F41/02; H01F41/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD FOR OBTAINING SMOOTH SURFACES ON ROUGH MINIATURE OBJECTS HAVING BROAD SURFACES AND SHARP PROJECTIONS COMPRISING APPLYING A LIQUID MATERIAL TO SAID OBJECTS, SAID MATERIAL HAVING A SURFACE TENSION OF APPROPRIATE MAGNITUDE SO THAT THE RESULTING COATING ON THE OBJECTS PULLS AWAY FROM SAID SHARP PROJECTIONS AND COLLECTS ON SAID BROAD SURFACES OF SAID OBJECTS, CURING SAID MATERIAL TO FORM A COATING ON SAID SURFACES THAT IS NEITHER BRITTLE NOR TACKY, SUBJECTING THE PREPARED OBJECTS TO EROSION TO REMOVE THE EXPOSED SHARP PROJECTIONS, AND FORMING FROM A SECOND LIQUID MATERIAL IN UNIFORM ELECTRICALLY INSULATING COATING ON SAID OBJECTS THAT COVERS THE BROAD SURFACES AND THE ROUNDED EDGES LEFT BY THE EROSION PROCESS.
Claim 2
Independent Claim
113 words
A METHOD FOR OBTAINING SMOOTH SURFACES ON ROUGH MINIATURE OBJECTS HAVING BROAD SURFACES AND SHARP PROJECTIONS COMPRISING APPLYING A LIQUID MATERIAL TO SAID OBJECTS, SAID MATERIAL HAVING A SURFACE TENSION OF APPROPRIATE MAGNITUDE SO THAT THE RESULTING COATING ON THE OBJECTS PULLS AWAY FROM SAID SHARP PROJECTIONS AND COLLECTS ON SAID BROAD SURFACES OF SAID OBJECTS, CURING SAID MATERIAL TO FORM A COATING ON SAID SURFACES THAT IS NEITHER BRITTLE NOR TACKY, SUBJECTING THE PREPARED OBJECTS TO EROSION TO REMOVE THE EXPOSED SHARP PROJECTIONS, AND FORMING FROM A SECOND LIQUID MATERIAL IN UNIFORM ELECTRICALLY INSULATING COATING ON SAID OBJECTS THAT COVERS THE BROAD SURFACES AND THE ROUNDED EDGES LEFT BY THE EROSION PROCESS.
References Cited (Backward Citations)
US2799789A
Cited
US2897692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |