US3262961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for soluble sodium tetraborate inhibitors
Assignee: Individual
•
Filing: 1963-11-08
•
Granted: 1966-07-26
•
Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Charles B Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/122; C07; C07F; C07F5/00; C07F5/02; C07F5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A METHOD FOR PREPARING A CORROSION INHIBITING ADDITIVE COMPOSITION WHICH COMPRISES ADDING TO ONE PART BY WEIGHT OF 1,2-PROPYLENE GLYCOL AN AMOUNT OF WATER CORRESPONDING TO (10-N) TIMES THE MOLAR EQUIVALENT OF SODIUM TETRABORATE TO BE ADDED LATER, WHERE N REPRESENTS THE MOLAR RATIO OF WATER OF HYDRATION ASSOCIATED WITH THE SAID SODIUM TETRABORATE AND IS A NUMBER LESS THAN 10 WHICH MAY BE ZERO, HEATING TO 85*C., AND THEN ADDING THE SAID SODIUM TETRABORATE IN A STATE OF HYDRATION CORRESPONDING TO THE FORMULA NA2B4O7.NH2O IN A TOTAL AMOUNT OF .01 TO .37 PART BY WEIGHT BASED ON THE WEIGHT OF THE 1,2-PROPYLENE GLYCOL USED, TIMES THE RATIO OF THE MOLECULAR WEIGHT OF NA2B4O7.NH2O TO NA2B4O7.10H2O, AND IN INCREMENTS OF .01 TO .10 PART BY WEIGHT, MAINTAINING THE TEMPRATURE AT APPROXIMATELY 85*C. AND STIRRING UNTIL THE MIXTURE BECOMES CLEAR BEFORE THE ADDITION OF EACH INCREMENT, AND AFTER THE ADDITION OF THE FINAL INCREMENT HEATING TO 105* C. AND MAINTAINING THE SOLUTION AT THIS TEMPERTURE UNTIL THE SAID SOLUTION HAS A WATER CONTENT NO GREATER THAN 2.5% AS DETERMINED BY THE KARL FISCHER METHOD.
Claim 2
Independent Claim
183 words
A METHOD FOR PREPARING A CORROSION INHIBITING ADDITIVE COMPOSITION WHICH COMPRISES ADDING TO ONE PART BY WEIGHT OF 1,2-PROPYLENE GLYCOL AN AMOUNT OF WATER CORRESPONDING TO (10-N) TIMES THE MOLAR EQUIVALENT OF SODIUM TETRABORATE TO BE ADDED LATER, WHERE N REPRESENTS THE MOLAR RATIO OF WATER OF HYDRATION ASSOCIATED WITH THE SAID SODIUM TETRABORATE AND IS A NUMBER LESS THAN 10 WHICH MAY BE ZERO, HEATING TO 85*C., AND THEN ADDING THE SAID SODIUM TETRABORATE IN A STATE OF HYDRATION CORRESPONDING TO THE FORMULA NA2B4O7.NH2O IN A TOTAL AMOUNT OF .01 TO .37 PART BY WEIGHT BASED ON THE WEIGHT OF THE 1,2-PROPYLENE GLYCOL USED, TIMES THE RATIO OF THE MOLECULAR WEIGHT OF NA2B4O7.NH2O TO NA2B4O7.10H2O, AND IN INCREMENTS OF .01 TO .10 PART BY WEIGHT, MAINTAINING THE TEMPRATURE AT APPROXIMATELY 85*C. AND STIRRING UNTIL THE MIXTURE BECOMES CLEAR BEFORE THE ADDITION OF EACH INCREMENT, AND AFTER THE ADDITION OF THE FINAL INCREMENT HEATING TO 105* C. AND MAINTAINING THE SOLUTION AT THIS TEMPERTURE UNTIL THE SAID SOLUTION HAS A WATER CONTENT NO GREATER THAN 2.5% AS DETERMINED BY THE KARL FISCHER METHOD.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |