US3173291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for analyzing articles
Assignee: Universal Match Corp
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Filing: 1960-10-26
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Granted: 1965-03-16
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Expires: 1980-10-26
Abstract
No abstract record available.
Inventors
- 👤 Luther G Simjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:41
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/11; G01N2291/00; G01N2291/02; G01N2291/023; G01N2291/0237; G01N2291/10; G01N2291/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD FOR ANALYZING A DOCUMENT HAVING A SELECTIVELY APPLIED COATING WHICH COATING CAUSES DIFFERENCES IN ACOUSTIC COUPLING BETWEEN A PROBE AND SAID DOCUMENT, COMPRISING THE STEPS OF : APPLYING A PROBE RADIATING AN ACOUSTIC SIGNAL TO SAID DOCUMENT AT A PREDETERMINED LOCATION OF SAID DOCUMENT AND MEASURING THE ACOUSTIC SIGNAL WHILE THE PROBE IS IN CONTACT WITH SAID DOCUMENT WHEREBY THE PRESENCE OF SAID COATING AT SAID LOCATION MANIFESTS ITSELF AS AN ACOUSTIC SIGNAL OF DIFFERENT MAGNITUDE THAN THE SIGNAL OBTAINED IN THE ABSENCE OF SAID COATING.
Claim 2
Independent Claim
88 words
A METHOD FOR ANALYZING A DOCUMENT HAVING A SELECTIVELY APPLIED COATING WHICH COATING CAUSES DIFFERENCES IN ACOUSTIC COUPLING BETWEEN A PROBE AND SAID DOCUMENT, COMPRISING THE STEPS OF : APPLYING A PROBE RADIATING AN ACOUSTIC SIGNAL TO SAID DOCUMENT AT A PREDETERMINED LOCATION OF SAID DOCUMENT AND MEASURING THE ACOUSTIC SIGNAL WHILE THE PROBE IS IN CONTACT WITH SAID DOCUMENT WHEREBY THE PRESENCE OF SAID COATING AT SAID LOCATION MANIFESTS ITSELF AS AN ACOUSTIC SIGNAL OF DIFFERENT MAGNITUDE THAN THE SIGNAL OBTAINED IN THE ABSENCE OF SAID COATING.
References Cited (Backward Citations)
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US2711646A
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US2932818A
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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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |