US3235519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonyl semicarbazides as blowing agents for polymeric materials
Assignee: Uniroyal Inc
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Filing: 1963-10-31
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Granted: 1966-02-15
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Byron A Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/104; C08J9/105; Y; Y10; Y10S; Y10S521/00; Y10S521/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS OF MAKING GAS-EXPANDED PRODUCTS WHICH COMPRISES INCORPORATING IN A GAS-EXPANSIBLE POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF RUBBERS AND SYNTHETIC RESINS, A SULFONYL SEMICARBAZIDEE IN WHICH THE SULFONYL GROUP IS DIRECTLY LINKED TO A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF PHENYL, LOWER ALKYL PHENYL, NAPHTHYL, ALKYLS HAVING FROM 1 TO 10 CARBON ATOMS, BENXYL, ALKYLENES OF NOT MORE THAN 10 CARBON ATOMS PER SULFONYL SEMICARBAZIDE GROUP AND XYLYLENE, AND HEATING THE MIXTURE ABOVE THE DECOMPOSITION TEMPERATURE OF SAID SEMICARBAZIDE.
Claim 2
Dependent Claim
84 words
A PROCESS OF MAKING GAS-EXPANDED PRODUCTS WHICH COMPRISES INCORPORATING IN A GAS-EXPANSIBLE POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF RUBBERS AND SYNTHETIC RESINS, A SULFONYL SEMICARBAZIDEE IN WHICH THE SULFONYL GROUP IS DIRECTLY LINKED TO A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF PHENYL, LOWER ALKYL PHENYL, NAPHTHYL, ALKYLS HAVING FROM 1 TO 10 CARBON ATOMS, BENXYL, ALKYLENES OF NOT MORE THAN 10 CARBON ATOMS PER SULFONYL SEMICARBAZIDE GROUP AND XYLYLENE, AND HEATING THE MIXTURE ABOVE THE DECOMPOSITION TEMPERATURE OF SAID SEMICARBAZIDE.
References Cited (Backward Citations)
US3152176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |