Patent US2931735A successfully refreshed from Google Patents.
US2931735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of marking graduated glass clinical thermometers
Assignee: Becton Dickinson and Co
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Filing: 1956-03-05
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Granted: 1960-04-05
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Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 John J Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/02; G01K5/025; Y; Y10; Y10S; Y10S65/00; Y10S65/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A METHOD OF PROVIDING PERMANENT AND POSITIVE SCALES ON AND FLUSH WITH THE SURFACE OF STEMS FORMING PARTS OF CLINICAL THERMOMETERS, SAID METHOD INCLUDING SUBJECTING A THERMOMETER TO SUFFICIENTLY ELEVATED AND DIFFERENT DEFINITE TEMPERATURES TO CAUSE THE THERMALLY RESPONSIVE LIQUID WITHIN ITS BULB TO RISE WITHIN THE STEM BORE AND ASSUME CERTAIN ELEVATED POSITIONS WITHIN THAT BORE TO POINTS INDIVDUAL TO THAT THERMOMETER, MARKING THESE POINTS UPON THE SURFACE OF THE STEM, COATING THE STEM WITH A LAYER OF COVERING MATERIAL IN A MANNER SUCH THAT THE POINT MARKINGS WILL BE VISIBLE IN THAT COATING, ENGRAVING A SCALE RELATED TO THOSE MARKINGS SO AS TO EXTEND AT LEAST BETWEEN THE POINTS, BY CUTTING THROUGH SUCH COATING TO EXPOSE THE GLASS STEM SURFACE IN DESIRED AND PREDETERMINED OUTLINE, APPLYING A METALLIC SALT TO OVERLIE SAID COATING AND EXTED THROUGH THE ENGRAVED OUTLINE THEREIN INTO CONTACT WITH THE GLASS, AND SUBJECTING THE STAINED COATED STEM TO HEAT OF A SUFFICIENT INTENSITY TO CAUSE AN ION EXCHANGE TO OCCUR BETWEEN THE STAIN AND GLASS SUCH THAT THE SCALE APPEARS FLUSH UPON AND BELOW THE STEM SURFACE.
Claim 2
Independent Claim
183 words
A METHOD OF PROVIDING PERMANENT AND POSITIVE SCALES ON AND FLUSH WITH THE SURFACE OF STEMS FORMING PARTS OF CLINICAL THERMOMETERS, SAID METHOD INCLUDING SUBJECTING A THERMOMETER TO SUFFICIENTLY ELEVATED AND DIFFERENT DEFINITE TEMPERATURES TO CAUSE THE THERMALLY RESPONSIVE LIQUID WITHIN ITS BULB TO RISE WITHIN THE STEM BORE AND ASSUME CERTAIN ELEVATED POSITIONS WITHIN THAT BORE TO POINTS INDIVDUAL TO THAT THERMOMETER, MARKING THESE POINTS UPON THE SURFACE OF THE STEM, COATING THE STEM WITH A LAYER OF COVERING MATERIAL IN A MANNER SUCH THAT THE POINT MARKINGS WILL BE VISIBLE IN THAT COATING, ENGRAVING A SCALE RELATED TO THOSE MARKINGS SO AS TO EXTEND AT LEAST BETWEEN THE POINTS, BY CUTTING THROUGH SUCH COATING TO EXPOSE THE GLASS STEM SURFACE IN DESIRED AND PREDETERMINED OUTLINE, APPLYING A METALLIC SALT TO OVERLIE SAID COATING AND EXTED THROUGH THE ENGRAVED OUTLINE THEREIN INTO CONTACT WITH THE GLASS, AND SUBJECTING THE STAINED COATED STEM TO HEAT OF A SUFFICIENT INTENSITY TO CAUSE AN ION EXCHANGE TO OCCUR BETWEEN THE STAIN AND GLASS SUCH THAT THE SCALE APPEARS FLUSH UPON AND BELOW THE STEM SURFACE.
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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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |