US2774736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying metal and metal vapor decontaminats
Assignee: William M Stieh & Co Inc
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Filing: 1953-09-21
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Granted: 1956-12-18
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Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 William M Stieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/64; C; C09; C09K; C09K3/00; C09K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF DECONTAMINATING AN AREA EXPOSED TO METALLIC MERCURY WHICH CONSISTS OF THE STEPS OF MIXING AT LEAST 5% AND NOT MORE THAN 20% OF ETHYLENE DIAMINE TETRA ACETIC ACID WITH AT LEAST 80% AND NOT MORE THAN 95% OF SODIUM THIOSULPHATE, SLOWLY DISSOLVING THE MIXTURE IN WATER TO FORM A MILKY SOLUTION, APPLYING THE SAID SOLUTION IN THE FORM OF A WASH TO THE CONTAMINATED SURFACES AND ALLOWING THE SAID SOLUTION TO DRY IN CONTACT WITH THE METALLIC MERCURY.
Claim 2
Independent Claim
81 words
THE METHOD OF DECONTAMINATING AN AREA EXPOSED TO METALLIC MERCURY WHICH CONSISTS OF THE STEPS OF MIXING AT LEAST 5% AND NOT MORE THAN 20% OF ETHYLENE DIAMINE TETRA ACETIC ACID WITH AT LEAST 80% AND NOT MORE THAN 95% OF SODIUM THIOSULPHATE, SLOWLY DISSOLVING THE MIXTURE IN WATER TO FORM A MILKY SOLUTION, APPLYING THE SAID SOLUTION IN THE FORM OF A WASH TO THE CONTAMINATED SURFACES AND ALLOWING THE SAID SOLUTION TO DRY IN CONTACT WITH THE METALLIC MERCURY.
References Cited (Backward Citations)
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US2257186A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |