Spiral wound filter assembly

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8940167
SERIAL NO

12666741

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The invention relates to a filter assembly for membrane filtration—of liquids, and more in particular a spiral wound filter assembly with improved filtration performance. Provided is a spiral wound filter assembly comprising a permeate channel (5; 305, 325) for transporting permeate to the permeate outlet (12), said permeate channel being provided with at least one flow restriction (13; 113, 120; 213; 333) in form of check or control valves or ridges, for increasing the pressure in at least part of the permeate channel. The invention further relates to an apparatus comprising such a filter assembly, and to methods for using this apparatus.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
ALPMA ALPENLAND MASCHINENBAU GMBH83543 ROTT AM INN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jongsma, Tjeerd Bennekom, NL 4 46
van, der Padt Albert Apeldoorn, NL 5 7

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 27, 2022
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 27, 2026
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00