Apparatus For Making A Multi-Segmented Filter
Patent No. US3551256 (titled "Apparatus For Making A Multi-Segmented Filter") was filed by Celanese on Apr 25, 1967. The application was issued on Dec 29, 1970.
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Technical Landscape
In the early 1960s when '256 was filed, filtration systems commonly relied on relatively simple mechanical separation techniques. At a time when material science was less advanced, achieving specific filtration characteristics often presented significant challenges. Manufacturing processes for complex filter structures were also less refined, making precise control over pore size and distribution non-trivial.
Prosecution Position
The disclosed invention provides an improved filter structure. This structure overcomes limitations in existing filtration systems by integrating multiple layers of different materials. This integration enables the filter to achieve a combination of filtration properties that were previously difficult to obtain. The technical effect is a filter with enhanced selectivity and efficiency.
Claims
This patent contains zero claims, therefore there are no independent or dependent claims to analyze.
Patent Summary
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US3551256
- Application Number
- US3551256D
- Filing Date
- Apr 25, 1967
- Publication Date
- Dec 29, 1970
- External Links
- Slate, USPTO, Google Patents