US2845345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying mercury
Assignee: —
•
Filing: —
•
Granted: 1958-07-29
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Expires: 1975-07-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:02
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A LOW-ALLOY HIGH-STRENGTH STEEL CHARACTERIZED IN THE HOT ROLLED CONDITION BY A YIELD POINT IN EXCESS OF 50,000 P.S.I. IN SECTIONS FROM 1/2 TO 1 1/12 INCHES WITHOUT SUBSTANTIAL VARIATION WITHIN SUCH THICKNESS RANGE, A CHARPY KEYHOLE NOTCH TRANSITION TEMPERATURE BELOW ABOUT -50*F. IN 1/2 INCH AND BELOW ABOUT 0*F. IN 1 1/2 INCH SECTIONS AND THE ABSENCE OF NICKEL, COBALT, COLUMBIUM, TANTALUM AND TUNGSTEN, SAID STEEL CONTAINING .05 TO .25 CARBON .50 TO 1.50 MANGANESE .10 TO 1.00 SILICON .30 TO 1.00 CHROMIUM .15 TO .50 COPPER .02 TO .10 VANADIUM .01 TO .10 ACID SOLUBLE ALUMINUM THE TOTAL OF THE CARBON AND VANADIUM BEING LESS THAN .28%, BALANCE IRON AND OTHER ELEMENTS IN AMOUNTS WHICH DO NOT ADVERSELY AFFECT THE PROPERTIES, SAID ELEMENTS BEING PROPORTIONED TO PRODUCE A MICROSTRUCTURE OF FERRITE AND FINE PEARLITE AFTER AIR-COOLING FROM HOT ROLLING TEMPERATURES.
Claim 2
Dependent Claim
142 words
A LOW-ALLOY HIGH-STRENGTH STEEL CHARACTERIZED IN THE HOT ROLLED CONDITION BY A YIELD POINT IN EXCESS OF 50,000 P.S.I. IN SECTIONS FROM 1/2 TO 1 1/12 INCHES WITHOUT SUBSTANTIAL VARIATION WITHIN SUCH THICKNESS RANGE, A CHARPY KEYHOLE NOTCH TRANSITION TEMPERATURE BELOW ABOUT -50*F. IN 1/2 INCH AND BELOW ABOUT 0*F. IN 1 1/2 INCH SECTIONS AND THE ABSENCE OF NICKEL, COBALT, COLUMBIUM, TANTALUM AND TUNGSTEN, SAID STEEL CONTAINING .05 TO .25 CARBON .50 TO 1.50 MANGANESE .10 TO 1.00 SILICON .30 TO 1.00 CHROMIUM .15 TO .50 COPPER .02 TO .10 VANADIUM .01 TO .10 ACID SOLUBLE ALUMINUM THE TOTAL OF THE CARBON AND VANADIUM BEING LESS THAN .28%, BALANCE IRON AND OTHER ELEMENTS IN AMOUNTS WHICH DO NOT ADVERSELY AFFECT THE PROPERTIES, SAID ELEMENTS BEING PROPORTIONED TO PRODUCE A MICROSTRUCTURE OF FERRITE AND FINE PEARLITE AFTER AIR-COOLING FROM HOT ROLLING TEMPERATURES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |