US3620945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making a composite dielectric body
Assignee: Texas Instruments Inc
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Filing: 1970-01-19
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Granted: 1971-11-16
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Expires: 1990-01-19
Abstract
Abstract A method for altering the dielectric constant of a dielectric body by a bombarding of a region of the body with an electron beam for a sufficient length of time to alter the dielectric constant of the body. Exposure of the body to the electron beam is terminated before the region becomes conductive, and the dielectric body exposed to the beam is preferably monocrystalline in nature.
Inventors
- 👤 David R Sivertsen
- 👤 Olin B Cecil
- 👤 Rolf R Haberecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/20; C30B33/00; H; H10; H10N; H10N97/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
12 words
The method of claim 1 in which said dielectric material is monocrystalline.
Claim 2
Dependent Claim
11 words
The method of claim 2 in which said material is anisotropic.
Claim 3
Dependent Claim
13 words
The method of claim 1 in which said material is monocrystalline aluminum oxide.
Claim 4
Dependent Claim
12 words
The method of claim 1 in which said material is barium titanate.
Claim 5
Dependent Claim
29 words
The method of claim 3 in which said exposure is terminated before the dielectric constant of said region is lowered below the lowest value exhibited by said anisotropic material.
Claim 6
Dependent Claim
48 words
The method of claim 1 further comprising: a. exposing an additional region of said body to an electron beam, and b. maintaining said additional region under such exposure until the dielectric constant of said additional region is altered an amount different from that of said first named region.
Claim 7
Dependent Claim
30 words
The process of claim 1 in which said exposure is selectively varied along the region of said body to change the dielectric constants thereof in accordance with a predetermined plan.
Claim 8
Independent Claim
51 words
The method of forming a capacitive member, comprising: a. forming conductive plate means in a dielectric substrate, and b. reforming a dielectric for cooperation with said plate means by exposing a region of said dielectric substrate between said plates to an electron beam to lower the dielectric constant of said region.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |