US3309338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyvinyl halide compositions
Assignee: Tenneco Chemicals Inc
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Filing: 1963-12-17
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Granted: 1967-03-14
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Expires: 1983-12-17
Abstract
No abstract record available.
Inventors
- 👤 James P Scullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/29; C08K5/04; C08K5/05; C08K5/053; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD FOR THE PREVENTION OF THE EVOLUTION OF LACRYMATORY GASES DURING THE HEATING AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 200*F. TO 350*F. OF A RESINOUS COMPOSITION COMPRISING A VINYL HALIDE HOMOPOLYMER, ASBESTOS, AND A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL, DIPENTAERYTHRITOL, AND MIXTURES THEREOF WHICH COMPRISINES ADDING A STABILIZING AMOUNT OF DICYANDIAMIDE TO SAID RESINOUS COMPOSITION PRIOR TO SAID HEATING STEP.
Claim 2
Independent Claim
67 words
THE METHOD FOR THE PREVENTION OF THE EVOLUTION OF LACRYMATORY GASES DURING THE HEATING AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 200*F. TO 350*F. OF A RESINOUS COMPOSITION COMPRISING A VINYL HALIDE HOMOPOLYMER, ASBESTOS, AND A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL, DIPENTAERYTHRITOL, AND MIXTURES THEREOF WHICH COMPRISINES ADDING A STABILIZING AMOUNT OF DICYANDIAMIDE TO SAID RESINOUS COMPOSITION PRIOR TO SAID HEATING STEP.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |