US3714077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane foam catalyst system
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1970-04-01
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Granted: 1973-01-30
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Expires: 1990-04-01
Abstract
Abstract HEAT DISCOLORATION OF POLYUTHANE FOAMS CONTAINING HALOGEN-CONTAINING POLYMERS SUCH AS POLYVINYL CHLORIDE IS REDUCED OR PREVENTED BY THE USE OF CATALYST SYSTEMS CONSISTING OF COMBINATIONS OF POLYOL-SOLUBLE ORGANIC STANNOUS COMPOUNDS WITH POLYOL-SOLUBLE ORGANIC BISMUTH AND/OR ANTIMONY COMPOUNDS, OPTIONALLY, WITH CERTAIN STERICALLY HINDERED TERTIARY AMINES SUCH AS N-METHYL DICYCLOHEXYL AMINE.
Inventors
- 👤 D Cobbledick
- 👤 A Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:41
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/22; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/16; C08K5/34; C08K5/35; C08L; C08L23/00; C08L23/26; C08L23/28; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L75/00; C08L75/04; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 0
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |