US2626968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded plastics
Assignee: RTX Corp
•
Filing: 1950-05-05
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Granted: 1953-01-27
•
Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Isaac L Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:22
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS OF MAKING AN EXPANDED PLASTIC SELECTED FROM THE GROUP CONSISTING OF RUBBER AND SYNTHETIC RESINS COMPRISING, COMBINING SAID PLASTIC TO BE EXPANDED WITH AN ORGANIC AMMONIUM NITRITE SELECTED FROM THE GROUP CONSISTING OF DI-ISOPROPYL AMMONIUM NITRITE, DI-ISOBUTYL AMMONIUM NITRITE, DI-CYCLOHEXY AMMONIUM NITRITE, DI-N-BUTYL AMMONIUM NITRITE DI-PHENYL AMMONIUM NITRITE, MONOPHENYL AMMONIUM NITRITE, MONOETHYL AMMONIUM NITRITE AND TRI-NBUTYL AMMONIUM NITRITE, AND SUBJECTING SAID PLASTIC AND NITRITE TO AN ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
70 words
A PROCESS OF MAKING AN EXPANDED PLASTIC SELECTED FROM THE GROUP CONSISTING OF RUBBER AND SYNTHETIC RESINS COMPRISING, COMBINING SAID PLASTIC TO BE EXPANDED WITH AN ORGANIC AMMONIUM NITRITE SELECTED FROM THE GROUP CONSISTING OF DI-ISOPROPYL AMMONIUM NITRITE, DI-ISOBUTYL AMMONIUM NITRITE, DI-CYCLOHEXY AMMONIUM NITRITE, DI-N-BUTYL AMMONIUM NITRITE DI-PHENYL AMMONIUM NITRITE, MONOPHENYL AMMONIUM NITRITE, MONOETHYL AMMONIUM NITRITE AND TRI-NBUTYL AMMONIUM NITRITE, AND SUBJECTING SAID PLASTIC AND NITRITE TO AN ELEVATED TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |