US3149093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing polypropylene
Assignee: Argus Chemical Corp
•
Filing: 1958-10-07
•
Granted: 1964-09-15
•
Expires: 1978-10-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Hecker
- 👤 Norman L Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58; C08L; C08L23/00; C08L23/26; C08L2023/40; C08L2023/42; C08L23/02; C08L23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A POLYPROPYLENE COMPOSITION HAVING IMPROVED PROCESSABILITY AT ELEVATED TEMPERATURES, AND A LOW REDUCTION IN MELT VISCOSITY AT SUCH TEMPERATURES, COMPRISING POLYPROPYLENE AND A STABILIZER COMBINATION CONSISTING ESSENTIALLY OF (1) AN ORGANOTIN MERCAPTIDE HAVING THE FORMULA
Claim 2
Dependent Claim
35 words
A POLYPROPYLENE COMPOSITION HAVING IMPROVED PROCESSABILITY AT ELEVATED TEMPERATURES, AND A LOW REDUCTION IN MELT VISCOSITY AT SUCH TEMPERATURES, COMPRISING POLYPROPYLENE AND A STABILIZER COMBINATION CONSISTING ESSENTIALLY OF (1) AN ORGANOTIN MERCAPTIDE HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |