Patent US3356895A successfully refreshed from Google Patents.
US3356895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectro-chemical analysis apparatus supplying substantially the same energy to the gap for all waveforms
Assignee: South African Inventions Development Corp
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Filing: 1964-12-30
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Granted: 1967-12-05
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Krauss Lutz
- 👤 Wolfgang W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:28
CPC Classifications
H; H05; H05B; H05B47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
FOR USE WITH A SOURCE OF POWER HAVING VARYING CHARACTERISTICS SUPPLYING VOLTAGE WAVEFORMS WHICH DIFFER AT LEAST IN THE SLOPE OF THEIR RESPECTIVE LEADING EDGES; APPARATUS FOR SPECTRO-CHEMICAL ANALYSIS COMPRISING FIRST MEANS DEFINING AN ANALYTICAL GAP, SECOND MEANS FOR CONTROLLING THE INFLATION OF A SPARK IN SAID ANALYTICAL GAP, ENERGY STORAGE MEANS COUPLED TO SAID SOURCE AND ADAPTED FOR SUPPLYING ENERGY TO SAID GAP, TRIGGER MEANS COUPLED TO SAID SECOND MEANS TO RIGGER A SPARK INSAID ANALYTICAL GAP, SENSING MEANS TO ACTUATE SAID TRIGGER MEANS UPON SENSING A PREDETERMINED VOLTAGE MAGNITUDE, SAID SENSING AND TRIGGER MEANS AT LEAST PARTLY CAUSING A DETERMINABLE
Claim 2
Dependent Claim
102 words
FOR USE WITH A SOURCE OF POWER HAVING VARYING CHARACTERISTICS SUPPLYING VOLTAGE WAVEFORMS WHICH DIFFER AT LEAST IN THE SLOPE OF THEIR RESPECTIVE LEADING EDGES; APPARATUS FOR SPECTRO-CHEMICAL ANALYSIS COMPRISING FIRST MEANS DEFINING AN ANALYTICAL GAP, SECOND MEANS FOR CONTROLLING THE INFLATION OF A SPARK IN SAID ANALYTICAL GAP, ENERGY STORAGE MEANS COUPLED TO SAID SOURCE AND ADAPTED FOR SUPPLYING ENERGY TO SAID GAP, TRIGGER MEANS COUPLED TO SAID SECOND MEANS TO RIGGER A SPARK INSAID ANALYTICAL GAP, SENSING MEANS TO ACTUATE SAID TRIGGER MEANS UPON SENSING A PREDETERMINED VOLTAGE MAGNITUDE, SAID SENSING AND TRIGGER MEANS AT LEAST PARTLY CAUSING A DETERMINABLE
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |