Method for fabrication of a molecular filter and apparatus...

Details Method for fabrication of a molecular filter and apparatus... Method for fabrication of a molecular filter and apparatus...

2007-08-07

2007-08-07

Fortuna, Ana (Department: 1723)

Liquid purification or separation

Casing divided by membrane into sections having inlet

C210S488000, C210S489000, C210S490000, C210S492000, C204S482000, C156S077000, C264SDIG048

Reexamination Certificate

active

09855404

ABSTRACT:
The invention is a method for fabricating molecular filters which can separate objects approximately 1-5 nm in range, where the filtration size is controlled by using thin films of materials and technologies to form a filtration channel or pore in a middle thin film layer in a multilayered structure. Lithography is used to define two offset arrays of blind holes into the opposing sides of a multi-layer membrane. The blind holes extend across a thin central filtration layer. A selective etch is used to attack the filtration layer to form a communicating channel between the two holes. The only connection between one side of the filter and the other is through the channel in the filter layer, whose thickness, d, determines the largest size object which can traverse the filter.

REFERENCES:
patent: 2028168 (1936-01-01), Roberts
patent: 3812972 (1974-05-01), Rosenblum
patent: 4721567 (1988-01-01), Uram

Affiliated with

Also associated with

Rating

Method for fabrication of a molecular filter and apparatus... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for fabrication of a molecular filter and apparatus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for fabrication of a molecular filter and apparatus... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3848586