Molded filter product

• US 2,576,864 A
• Filed: 07/13/1946
• Issued: 11/27/1951
• Est. Priority Date: 07/13/1946
• Status: Expired due to Term

• Current Assignee: John E. Valente
• Original Assignee: John E. Valente
• Inventors: Valente, John E.
• Application Number:
  US02/683,336
• Time in Patent Office: 1,963 Days
• US Class Current: 210/491
• CPC Class Codes: B01D 2201/182 for depth filtration
• CPC Class Codes: B01D 29/012 Making filtering elements making bag, cage, hose, tube, sleeve or like filtering elements B01D29/111
• CPC Class Codes: B01D 29/03 self-supporting
• CPC Class Codes: B01D 29/111 Making filtering elements
• CPC Class Codes: B01D 29/33 arranged for inward flow filtration
• CPC Class Codes: B01D 29/35 arranged for outward flow filtration
• CPC Class Codes: B01D 39/18 the material being cellulose or derivatives thereof cork or peat B01D39/1646 ; making filter paper D21F11/14
• CPC Class Codes: B29C 43/027 having an axis of symmetry B29C43/102 takes precedence
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: Y10S 55/05 Methods of making filter
• CPC Class Codes: Y10T 156/103 Encasing or enveloping the configured lamina
• CPC Class Codes: Y10T 156/1033 Flexible sheet to cylinder lamina
• CPC Class Codes: Y10T 156/1044 of parallel stacked sheets only
• CPC Class Codes: Y10T 156/1089 of discrete laminae to single face of additional lamina

Claims