US3278466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic cellular polymers with mixed blowing agents
Assignee: Individual
•
Filing: 1965-02-23
•
Granted: 1966-10-11
•
Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Cram Donald John
- 👤 Reed Ronald Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/102; C08J9/103; D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0007; D06N7/0013; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S521/00; Y10S521/909; Y10S521/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A COMPOSITION FOR USE IN THE PRODUCTIN OF THERMOPLASTIC, CELLULAR POLYMERIC MATERIALS, SAID COMPOSITION COMPRISNG AZODICARBONAMIDE AS A PRIMARY BLOWING AGENT AND AT LEAST ONE SECONDARY BLOWING AGENT, SAID SECONDARY BLOWING AGENT BEING CHARACTERISED IN (1) HAVING A LOWER DECOMPOSITION TEMPERATURE THAN AZODICARBONAMIDE, (2) HAVING A MOLECULAR STRUCTURE IN WHICH AT LEAST ONE NITROGEN ATOM IS LINKED DIRECTLY TO AN ADJACENT NITROGEN ATOM AND (3) IN DECOMPOSING TO GIVE A GASEOUS PRODUCT CONTAINING ELEMENTAL NITROGEN.
Claim 2
Dependent Claim
75 words
A COMPOSITION FOR USE IN THE PRODUCTIN OF THERMOPLASTIC, CELLULAR POLYMERIC MATERIALS, SAID COMPOSITION COMPRISNG AZODICARBONAMIDE AS A PRIMARY BLOWING AGENT AND AT LEAST ONE SECONDARY BLOWING AGENT, SAID SECONDARY BLOWING AGENT BEING CHARACTERISED IN (1) HAVING A LOWER DECOMPOSITION TEMPERATURE THAN AZODICARBONAMIDE, (2) HAVING A MOLECULAR STRUCTURE IN WHICH AT LEAST ONE NITROGEN ATOM IS LINKED DIRECTLY TO AN ADJACENT NITROGEN ATOM AND (3) IN DECOMPOSING TO GIVE A GASEOUS PRODUCT CONTAINING ELEMENTAL NITROGEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |