Patent US6028692A successfully refreshed from Google Patents.
US6028692A
Expired / Lapsed
US
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Controllable optical periodic surface filter
Assignee: Texas Instruments Inc
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Filing: 1995-05-30
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Granted: 2000-02-22
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Expires: 2015-05-30
Abstract
Abstract Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. Other methods and devices are disclosed.
Inventors
- 👤 Charles M. Rhoads
- 👤 Gary Frazier
- 👤 II Richard G. Hoffman
- 👤 Oren B. Kesler
- 👤 Daniel J. Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:56
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/781; B; B82; B82Y; B82Y20/00; G02; G02F; G02F1/00; G02F1/01; G02F1/015; H; H01; H01Q; H01Q15/00; H01Q15/0006; H01Q15/0013; H01Q15/002; H01Q3/00; H01Q3/26; H01Q3/2676; H01Q3/44; H01Q3/46; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/115; G02F1/0126; G02F1/017; G02F1/01716; H01S3/105
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
41 words
A tunable surface filter comprising: a. at least one element at a surface of said filter wherein said element comprises a patterned antenna structure and at least one end stub; and b. electronic control to change electromagnetic characteristics of said element.
Claim 2
Dependent Claim
41 words
A tunable surface filter comprising: a. at least one element at a surface of said filter wherein said element comprises a patterned antenna structure and at least one end stub; and b. electronic control to change electromagnetic characteristics of said element.
Claim 3
Dependent Claim
19 words
The filter of claim 1, wherein said electronic control or connects said patterned antenna structure and said end stub.
Claim 4
Dependent Claim
10 words
The filter of claim 1, wherein said element is isolated.
Claim 5
Dependent Claim
10 words
The filter of claim 1, wherein said element is slotted.
Claim 6
Dependent Claim
14 words
The filter of claim 1, wherein said element forms a capacitive patterned antenna structure.
Claim 7
Dependent Claim
14 words
The filter of claim 1, wherein said element forms an inductive patterned antenna structure.
Claim 8
Dependent Claim
11 words
The filter of claim 1, wherein said element is a dipole.
Claim 9
Dependent Claim
28 words
The filter of claim 1, wherein a conducting overcoat electrically connects said element at a surface of said filter to another element at a surface of said filter.
Claim 10
Dependent Claim
10 words
The filter of claim 8, wherein said overcoat is metal.
Claim 11
Dependent Claim
28 words
The filter of claim 1, wherein a conducting undercoat electrically connects said element at a surface of said filter to another element at a surface of said filter.
Claim 12
Dependent Claim
10 words
The filter of claim 10, wherein said undercoat is metal.
Claim 13
Dependent Claim
12 words
The filter of claim 10, wherein said undercoat is a doped semiconductor.
Claim 14
Dependent Claim
12 words
The filter of claim 1, wherein said filter is a bandpass filter.
Claim 15
Dependent Claim
12 words
The filter of claim 1, wherein said filter is a bandreject filter.
Claim 16
Dependent Claim
10 words
The filter of claim 1, wherein said filter is periodic.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-21 | 2003-08-23 | 2004-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-21 | 2007-08-23 | 2008-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-21 | 2011-08-23 | 2012-02-22 | $7700.00 | Window Closed / Lapsed |