Patent US3176181A successfully refreshed from Google Patents.
US3176181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apertured coaxial tube quadripole lens
Assignee: US Philips Corp
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Filing: 1960-10-31
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Granted: 1965-03-30
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Blackler Francis Geoffrey
- 👤 Skoyles Derek Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:14
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/56; H01J29/58; H01J29/62; H01J29/626; H01J29/628
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A QUADRIPOLE ELECTROSTATIC LENS SYSTEM ADAPTED TO FOCUS A BEAM OF ELECTRICALLY CHARGED PARTICLES ALONG A GIVEN AXIS, COMPRISING A TUBULAR INNER CONDUCTIVE MEMBER LONGITUDINALLY DISPOSED ABOUT SAID BEAM AND HAVING A PAIR OF WINDOWS FORMED IN REGIONS THEREOF WHCIH ARE DIAMTERICALLY DISPOSED RELATIVE TO THE BEAM AXIS, FIELD CONFIGURATION MODIFYING MEANS COMPRISING CONDUCTIVE ELEMENTS PROJECTING FROM SAID INNER MEMVER INTO THE WINDOW AREAS ALONG AXES SUBSTANTIALLY PARALLEL TO SAID BEAM AXIS, AN OUTER CONDUCTIVE MEMBER COAXIAL WITH AND LONGITUDINALLY DISPOSED ABOUT SAID INNER MEMBER AND HAVING OPERATIVE CONDUCTIVE ELEMENTS ARRANGED SUBSTANTIALLY IN JUXTAPOSITION TO AND COVERING SAID WINDOWS AND SAID FIELD MODIFYING MEANS, AND MEANS FOR ESTABLISHING A POTENTIAL DIFFERENCE BETWEEN SAID INNER AND OUTER CONDUCTIVE MEMBERS.
Claim 2
Dependent Claim
118 words
A QUADRIPOLE ELECTROSTATIC LENS SYSTEM ADAPTED TO FOCUS A BEAM OF ELECTRICALLY CHARGED PARTICLES ALONG A GIVEN AXIS, COMPRISING A TUBULAR INNER CONDUCTIVE MEMBER LONGITUDINALLY DISPOSED ABOUT SAID BEAM AND HAVING A PAIR OF WINDOWS FORMED IN REGIONS THEREOF WHCIH ARE DIAMTERICALLY DISPOSED RELATIVE TO THE BEAM AXIS, FIELD CONFIGURATION MODIFYING MEANS COMPRISING CONDUCTIVE ELEMENTS PROJECTING FROM SAID INNER MEMVER INTO THE WINDOW AREAS ALONG AXES SUBSTANTIALLY PARALLEL TO SAID BEAM AXIS, AN OUTER CONDUCTIVE MEMBER COAXIAL WITH AND LONGITUDINALLY DISPOSED ABOUT SAID INNER MEMBER AND HAVING OPERATIVE CONDUCTIVE ELEMENTS ARRANGED SUBSTANTIALLY IN JUXTAPOSITION TO AND COVERING SAID WINDOWS AND SAID FIELD MODIFYING MEANS, AND MEANS FOR ESTABLISHING A POTENTIAL DIFFERENCE BETWEEN SAID INNER AND OUTER CONDUCTIVE MEMBERS.
References Cited (Backward Citations)
US2844753A
Cited
US3069588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |