US2658837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of marking hypodermic syringes
Assignee: PREMO PHARMACEUTICAL LAB Inc
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Filing: 1951-09-10
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Granted: 1953-11-10
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Expires: 1971-09-10
Abstract
No abstract record available.
Inventors
- 👤 Seymour N Blackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:12
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; C; C03; C03C; C03C17/00; C03C17/06; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/251; C03C2218/00; C03C2218/10; C03C2218/17; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF MARKING GLASS MEMBERS HAVING CLOSELY SPACED SURFACES, SAID METHOD COMPRISING THE STEPS OF PLACING ON ONE OF SAID SURFACES A DISTINGUISHING MARK COMPOSED ON A METALLIC COMPOUND WHICH IN A TEMPERATURE RANGE THAT WILL NOT AFFECT THE DIMENSIONAL STABILITY OF THE GLASS MEMBERS IS HEAT-DECOMPOSABLE TO FORM NASCENT METAL THAT IS NON-REACTIVE WITH THE AMBIENT ATMOSPHERE, PLACING SAID SURFACES IN CLOSELY SPACED SUPERIMPOSED POSITION, AND HEAT-DECOMPOSING SAID COMPOUND SO AS TO RELEASE NASCENTMETAL ONTO BOTH SAID JUXTAPOSED SURFACES SIMULTANEOUSLY TO ENTER SAID SURFACES AND FORM STAINS THEREIN.
Claim 2
Independent Claim
90 words
A METHOD OF MARKING GLASS MEMBERS HAVING CLOSELY SPACED SURFACES, SAID METHOD COMPRISING THE STEPS OF PLACING ON ONE OF SAID SURFACES A DISTINGUISHING MARK COMPOSED ON A METALLIC COMPOUND WHICH IN A TEMPERATURE RANGE THAT WILL NOT AFFECT THE DIMENSIONAL STABILITY OF THE GLASS MEMBERS IS HEAT-DECOMPOSABLE TO FORM NASCENT METAL THAT IS NON-REACTIVE WITH THE AMBIENT ATMOSPHERE, PLACING SAID SURFACES IN CLOSELY SPACED SUPERIMPOSED POSITION, AND HEAT-DECOMPOSING SAID COMPOUND SO AS TO RELEASE NASCENTMETAL ONTO BOTH SAID JUXTAPOSED SURFACES SIMULTANEOUSLY TO ENTER SAID SURFACES AND FORM STAINS THEREIN.
References Cited (Backward Citations)
US2083228A
Cited
US2505411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |