US3421885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for producing exothermic reactions
Assignee: Pfizer Inc
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Filing: 1965-08-20
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Granted: 1969-01-14
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Expires: 1985-08-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:26
CPC Classifications
C; C22; C22B; C22B5/00; C22B5/02; C22B5/04; C22B5/06; Y; Y10; Y10S; Y10S75/00; Y10S75/959
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A METHOD FOR PRODUCING EXOTHERMIC REACTIONS, THE STEPS COMPRISING PROVIDING A MIXTURE OF INGREDIENTS CONTAINING A FIRST REAGENT SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS OF 2 TO 10 CARBON ATOMS AND SALTS THEREOF, A SECOND REAGENT SELECTED FROM THE GROUP CONSISTING OF OXIDIZING ACIDS AND SALTS THEREOF, AND A METALLIC ELEMENT IN COMBINED FORM, SAID ELEMENT BEING SELECTED FROM THE GROUP CONSISTING OF THOSE OF ATOMIC NUMBER AT LEAST 24 OF THE GROUPS I-B, II-B, III-A, IV-A, V-A, VI-A, VI-B, VII-B AND VIII OF THE PERIODIC TABLE AND THORIUM AND URANIUM, THE SUM OF THE CONCENTRATIONS OF SAID FIRST AND SECOND REAGENTS BEING SELECTED TO PROVIDE AT LEAST ONE MOLAR EQUIVALENT PER MOLE OF SAID METALLIC ELEMENT AND A MOLAR RATIO OF SAID FIRST TO SAID SECOND REAGENT OF AT LEAST ABOUT 0.2 AND LESS THAN ABOUT 10 AFTER VAPORIZATION OF ANY EXCESS VOLATILE REAGENT, HEATING SAID MIXTURE FOR A TIME AT LEAST SUFFICIENT TO BOIL OFF VOLATILE COMPONENTS AND TO FORM A VISCOUS LIQUID, AND COOLING SAID VISCOUS LIQUID, TO A SOLID GLASSY MASS CAPABLE OF DECOMPOSING EXOTHERMICALLY WHEN HEATED TO ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
187 words
IN A METHOD FOR PRODUCING EXOTHERMIC REACTIONS, THE STEPS COMPRISING PROVIDING A MIXTURE OF INGREDIENTS CONTAINING A FIRST REAGENT SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS OF 2 TO 10 CARBON ATOMS AND SALTS THEREOF, A SECOND REAGENT SELECTED FROM THE GROUP CONSISTING OF OXIDIZING ACIDS AND SALTS THEREOF, AND A METALLIC ELEMENT IN COMBINED FORM, SAID ELEMENT BEING SELECTED FROM THE GROUP CONSISTING OF THOSE OF ATOMIC NUMBER AT LEAST 24 OF THE GROUPS I-B, II-B, III-A, IV-A, V-A, VI-A, VI-B, VII-B AND VIII OF THE PERIODIC TABLE AND THORIUM AND URANIUM, THE SUM OF THE CONCENTRATIONS OF SAID FIRST AND SECOND REAGENTS BEING SELECTED TO PROVIDE AT LEAST ONE MOLAR EQUIVALENT PER MOLE OF SAID METALLIC ELEMENT AND A MOLAR RATIO OF SAID FIRST TO SAID SECOND REAGENT OF AT LEAST ABOUT 0.2 AND LESS THAN ABOUT 10 AFTER VAPORIZATION OF ANY EXCESS VOLATILE REAGENT, HEATING SAID MIXTURE FOR A TIME AT LEAST SUFFICIENT TO BOIL OFF VOLATILE COMPONENTS AND TO FORM A VISCOUS LIQUID, AND COOLING SAID VISCOUS LIQUID, TO A SOLID GLASSY MASS CAPABLE OF DECOMPOSING EXOTHERMICALLY WHEN HEATED TO ELEVATED TEMPERATURE.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |