US3340209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated azodicarbonamide
Assignee: National Polychemicals Inc
•
Filing: 1964-12-31
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Granted: 1967-09-05
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Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles P Riley
- 👤 Strauss Richard
- 👤 Henry R Lasman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:53
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/102; C08J9/103; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/13; Y10S521/00; Y10S521/909; Y10S521/91
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
A BLOWING AGENT COMPOSITION HAVING A SINGLE PRIMARY DECOMPOSITION TEMPERATURE RANGE WHICH COMPOSITION COMPRISES IN COMBINATION: AZODICARBONAMIDE; A POLYVALENT HEAVY METAL SALT WHICH LOWERS THE DECOMPOSITION TEMPERATURE OF THE AZODICARBONAMIDE; AN ALKALI METAL SALT; AND A BICARBONATE SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM BICARBONATES, THE BICARBONATE PRESENT IN AN AMOUNT FROM ABOUT 1 TO 40% BY WEIGHT BASED ON THE AZODICARBONAMIDE THE RATIO OF THE HEAVY METAL TO THE ALKALI METAL RANGING FROM ABOUT 5:1 TO 1:5 AND THE RATIO OF THE ALKALI METAL TO AZODICARBONAMIDE RANGING FROM ABOUT 1:10 TO ABOUT 4:1.
Claim 2
Dependent Claim
96 words
A BLOWING AGENT COMPOSITION HAVING A SINGLE PRIMARY DECOMPOSITION TEMPERATURE RANGE WHICH COMPOSITION COMPRISES IN COMBINATION: AZODICARBONAMIDE; A POLYVALENT HEAVY METAL SALT WHICH LOWERS THE DECOMPOSITION TEMPERATURE OF THE AZODICARBONAMIDE; AN ALKALI METAL SALT; AND A BICARBONATE SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM BICARBONATES, THE BICARBONATE PRESENT IN AN AMOUNT FROM ABOUT 1 TO 40% BY WEIGHT BASED ON THE AZODICARBONAMIDE THE RATIO OF THE HEAVY METAL TO THE ALKALI METAL RANGING FROM ABOUT 5:1 TO 1:5 AND THE RATIO OF THE ALKALI METAL TO AZODICARBONAMIDE RANGING FROM ABOUT 1:10 TO ABOUT 4:1.
Claim 3
Dependent Claim
43 words
A BLOWABLE POLYMER COMPOSITION WHICH COMPRISES A GAS-EXPANDABLE THERMOPLASTIC POLYMER CAPABLE OF BEING EXPANDED IN THE PLASTIC STATE BY THE EVOLUTION OF A GAS TO FORM A CELLULAR STRUCTURE, THE POLYMER CONTAINING A BLOWING AMOUNT OF THE BLOWING AGENT COMPOSITION OF CLAIM 1.
References Cited (Backward Citations)
US3067151A
Cited
US3197423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |