Patent US4300570A successfully refreshed from Google Patents.
US4300570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic method
Assignee: Medical College of Wisconsin
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Filing: 1980-04-24
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Granted: 1981-11-17
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Expires: 2000-04-24
Abstract
Abstract A method of detecting cancer and other abnormalities involves projecting the image of the cervix from the photograph onto a screen, viewing the screen from a short distance and noting the abnormalities.
Inventors
- 👤 Adolf Stafl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:58
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A method of detecting cervical cancer and other abnormalities of the cervix which comprises illuminating the cervix, viewing the cervix through the viewer of a single lens reflex camera equipped with an extender and a telelens which is mounted on the extender with said telelens being positioned at least 15 centimeters from the cervix, taking a slide photograph of the cervix, developing and projecting the slide photograph on a screen so that the projected image substantially fills the screen and then visually evaluating the projected image from a very close distance and noting any abnormalities.
Claim 2
Independent Claim
95 words
A method of detecting cervical cancer and other abnormalities of the cervix which comprises illuminating the cervix, viewing the cervix through the viewer of a single lens reflex camera equipped with an extender and a telelens which is mounted on the extender with said telelens being positioned at least 15 centimeters from the cervix, taking a slide photograph of the cervix, developing and projecting the slide photograph on a screen so that the projected image substantially fills the screen and then visually evaluating the projected image from a very close distance and noting any abnormalities.
Claim 3
Dependent Claim
18 words
The method of claim 1 in which the extender is about 50 to about 100 mms in length.
Claim 4
Dependent Claim
13 words
The method of the claim 1 in which the telelens is 100 mm.
Claim 5
Independent Claim
116 words
A method of detecting cervical cancer and other abnormalities of the cervix which comprises illuminating the cervix and viewing the cervix through the viewer of a single lens reflex camera equipped with an extender which is about 50 to about 100 mm in length and a 100 mm telelens which is mounted on the extender and positioned at least 15 centimeters from the cervix, taking a flash slide photograph of the cervix, developing and projecting the slide photograph on a screen about three meters square so that the projected image substantially fills the screen and then visually evaluating the projected image from about 50 centimeters to about one meter from the screen and noting any abnormalities.
Claim 6
Independent Claim
116 words
A method of detecting cervical cancer and other abnormalities of the cervix which comprises illuminating the cervix and viewing the cervix through the viewer of a single lens reflex camera equipped with an extender which is about 50 to about 100 mm in length and a 100 mm telelens which is mounted on the extender and positioned at least 15 centimeters from the cervix, taking a flash slide photograph of the cervix, developing and projecting the slide photograph on a screen about three meters square so that the projected image substantially fills the screen and then visually evaluating the projected image from about 50 centimeters to about one meter from the screen and noting any abnormalities.
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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |