Patent FR963231A successfully refreshed from Google Patents.
Patent US3658730A successfully refreshed from Google Patents.
US3658730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas producing compositions containing azodicarbonamide
Assignee: Toray Industries Inc
•
Filing: 1969-07-09
•
Granted: 1972-04-25
•
Expires: 1989-07-09
Abstract
Abstract GAS PRODUCING COMPOSITIONS ARE PROVIDED WHICH CONTAIN AZODICARBONAMIDE AND AT LEAST ONE CHROMIUM CONTAINING COMPOUND SUCH AS A CHROMATE, DICHROMATE OR CHROMIUM ALUM SALT OF AN ALKALI OR ALKALINE EARTH METAL OR A CHROMIUM COMPOUND SUCH AS CHROMIUM TRIOXIDE OR CHROMIUM TRICHLORIDE. THE COMPOSITIONS OF THIS INVENTION DECOMPOSE AT A LOWER TEMPERATURE AND PRODUCE A GREATER VOLUME OF GAS THAN AN EQUIVALENT AMOUNT OF AZODICARBONAMIDE MAKING THE COMPOSITIONS OF THIS INVENTION ESPECIALLY USEFUL AS BLOWING AGENTS IN THE PREPARTATION OF FOAMED THERMOPLASTIC RESIN PRODUCTS.
Inventors
- 👤 Toshimasa Takahashi
- 👤 Moriyuki Takaichi
- 👤 Hiroshi Makino
- 👤 Toshikazu Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:37
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/102; C08J9/103; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S521/00; Y10S521/908; Y10S521/915
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |