US4869835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion source
Assignee: GRYOVAC Co Ltd
•
Filing: 1988-11-18
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Granted: 1989-09-26
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Expires: 2008-11-18
Abstract
Abstract The present invention provides an ion source comprising an ion-generating chamber and an anode formed of multi-capillary for sending high-density atoms or molecules to be ionized into the ion-generating chamber in a constant direction.
Inventors
- 👤 Soichi Ogawa
- 👤 Akio Okamoto
- 👤 Shigeo Fukui
- 👤 Tsutomu Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:27
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/317; H01J37/3178; H01J27/00; H01J27/02; H01J27/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
29 words
Ion source comprising an ion-generating chamber and an anode formed of multi-capillary for sending high-density atoms or molecules to be ionized into the ion-generating chamber in a constant direction.
Claim 2
Dependent Claim
29 words
Ion source comprising an ion-generating chamber and an anode formed of multi-capillary for sending high-density atoms or molecules to be ionized into the ion-generating chamber in a constant direction.
Claim 3
Dependent Claim
25 words
The ion source as claimed in claim 1, wherein the ion-generating chamber is provided with a cathode supplying thermal electrons to ionize atoms or molecules.
Claim 4
Dependent Claim
22 words
The ion source as claimed in claim 1, which is provided with a supporting electrode to increase the ion-extracting efficiency under vacuum.
Claim 5
Dependent Claim
38 words
The ion source as claimed in claim 1, which is provided with an electrode for the input of radiofrequency power or a waveguide for the input of microwave power to ionize atoms or molecules in the ion-generating chamber.
References Cited (Backward Citations)
US2945951A
Cited
US4549082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |