US3274668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making three-dimensional dielectric lens
Assignee: Armstrong World Industries Inc
•
Filing: 1965-08-02
•
Granted: 1966-09-27
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:26
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q15/08; Y; Y10; Y10S; Y10S425/00; Y10S425/808; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF FABRICATING A THREE-DIMENSIONAL DIELECTRIC LENS HAVING A VARYING DIELECTRIC CONSTANT WHICH COMPRISES THE STEPS OF FABRICARING A SUBSTANTIALLY CYLINDRICAL STARTING MASS OF DIELECTRIC MATERIAL EXHIBITING A TWODIMENSIONAL VARIATION IN DIELECTRIC GRADIENT IN DIRECTIONS BETWEEN THE CENTRAL AXIS AND OUTER CIRCULAR SIDE OF SAID CYLINDRICAL STARTING MASS, SLICING SAID STARTING MASS ALONG OPPOSITELY INCLINED PLANES EXTENDING TRANSVERSE TO THE OUTER CIRCULAR SIDE OF SAID MASS WITH SAID OPPOSITELY INCLINED PLANES INTERSECTING ONE ANOTHER SUBSTANTIALLY ALONG A DIAMETRICAL PLANE IN SAID MASS THEREBY TO FORM PLURAL WEDGES OF TWO-DIMENSIONALLY GRADED MATERIAL, EACH OF WHICH WEDGES HAS A RELATIVELY THIN SUBSTANTIALLY LINEAR EDGE TAKEN FROM A CENTRAL PORTION OF THE STARTING MASS WITH THE OPPOSING ENDS OF SAID LINEAR EDGE BEING INTERCON-
Claim 2
Independent Claim
122 words
THE METHOD OF FABRICATING A THREE-DIMENSIONAL DIELECTRIC LENS HAVING A VARYING DIELECTRIC CONSTANT WHICH COMPRISES THE STEPS OF FABRICARING A SUBSTANTIALLY CYLINDRICAL STARTING MASS OF DIELECTRIC MATERIAL EXHIBITING A TWODIMENSIONAL VARIATION IN DIELECTRIC GRADIENT IN DIRECTIONS BETWEEN THE CENTRAL AXIS AND OUTER CIRCULAR SIDE OF SAID CYLINDRICAL STARTING MASS, SLICING SAID STARTING MASS ALONG OPPOSITELY INCLINED PLANES EXTENDING TRANSVERSE TO THE OUTER CIRCULAR SIDE OF SAID MASS WITH SAID OPPOSITELY INCLINED PLANES INTERSECTING ONE ANOTHER SUBSTANTIALLY ALONG A DIAMETRICAL PLANE IN SAID MASS THEREBY TO FORM PLURAL WEDGES OF TWO-DIMENSIONALLY GRADED MATERIAL, EACH OF WHICH WEDGES HAS A RELATIVELY THIN SUBSTANTIALLY LINEAR EDGE TAKEN FROM A CENTRAL PORTION OF THE STARTING MASS WITH THE OPPOSING ENDS OF SAID LINEAR EDGE BEING INTERCON-
References Cited (Backward Citations)
US2716190A
Cited
US2761141A
Cited
US2956281A
Cited
US3064391A
Cited
US3015102A
Cited
US3082510A
Cited
US3055005A
Cited
US3165817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |