US3845180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of pearlescent plastics
Assignee: Mearl Corp
•
Filing: 1972-04-24
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Granted: 1974-10-29
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Expires: 1992-04-24
Abstract
Abstract 1. A METHOD OF IMPARTING OR IMPROVING PEARLESCENCE AND INCREASING OPACITY WHICH COMPRISES COLD DRAWING A PLASTIC AT A TEMPERATURE AT LEAST 10*C BELOQW ITS GLASS TRANSITION TEMPERATURE AT LEAST 10*C BELOW ITS GLASS ANCE HAS BEEN ACHEIVED, WHEREIN THE PLASTIC IS A THERMOPLASTIC POLYMER OF AN UNSATURATED ALIPHATIC HYDROCARBON OF 2 TO ABOUT 10 CARBON ATOMS WHICH NECKS DOWN UPON COLD DRAWING AND HAS CRYSTALLINITY OR CONTAINS A PLATY SUBSTANCE.
Inventors
- 👤 J Pinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:12
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; B; B29; B29C; B29C55/00; B29C55/02; B29C70/00; B29C70/58; B29C70/585; B44; B44F; B44F9/00; B44F9/08; C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/10; B29K; B29K2101/00; B29K2101/12; B29K2105/00; B29K2105/0005; B29K2105/0032; B29K2709/00; B29K2709/10; B29K2995/00; B29K2995/0018; B29K2995/002; B29K2995/0025; B29K2995/003; B29K2995/0037; B29K2995/0041; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S264/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF IMPARTING OR IMPROVING PEARLESCENCE AND INCREASING OPACITY WHICH COMPRISES COLD DRAWING A PLASTIC AT A TEMPERATURE AT LEAST 10*C BELOQW ITS GLASS TRANSITION TEMPERATURE AT LEAST 10*C BELOW ITS GLASS ANCE HAS BEEN ACHEIVED, WHEREIN THE PLASTIC IS A THERMOPLASTIC POLYMER OF AN UNSATURATED ALIPHATIC HYDROCARBON OF 2 TO ABOUT 10 CARBON ATOMS WHICH NECKS DOWN UPON COLD DRAWING AND HAS CRYSTALLINITY OR CONTAINS A PLATY SUBSTANCE.
Claim 2
Independent Claim
70 words
A METHOD OF IMPARTING OR IMPROVING PEARLESCENCE AND INCREASING OPACITY WHICH COMPRISES COLD DRAWING A PLASTIC AT A TEMPERATURE AT LEAST 10*C BELOQW ITS GLASS TRANSITION TEMPERATURE AT LEAST 10*C BELOW ITS GLASS ANCE HAS BEEN ACHEIVED, WHEREIN THE PLASTIC IS A THERMOPLASTIC POLYMER OF AN UNSATURATED ALIPHATIC HYDROCARBON OF 2 TO ABOUT 10 CARBON ATOMS WHICH NECKS DOWN UPON COLD DRAWING AND HAS CRYSTALLINITY OR CONTAINS A PLATY SUBSTANCE.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |