Mark B Benjamin

US Patent:

8070951, Dec 6, 2011

Filed:

Jun 18, 2009

Appl. No.:

12/487518

Inventors:

Mark M. Benjamin - Seattle WA, US
Yu-Jung Chang - Bellevue WA, US
Jaeshin Kim - Midland MI, US
Zhenxiao Cai - Seattle WA, US

Assignee:

University of Washington through its Center for Commercialization - Seattle WA

International Classification:

B03D 3/06
B01D 39/00

US Classification:

210638, 210636, 210650, 210663, 210702, 210774, 210777, 210504, 502406

Abstract:

Metal oxide particles heated while immersed in water in a closed container are combined with membrane filtration to remove contaminants from water. The use of the heated particles reduces fouling of the membrane typically encountered when membranes alone are used to remove contaminants from water.

US Patent:

55545297, Sep 10, 1996

Filed:

May 9, 1994

Appl. No.:

8/239924

Inventors:

Mark B. Benjamin - Boston MA
John B. Little - Brookline MA

Assignee:

President and Fellows of Harvard College - Cambridge MA

International Classification:

C12N 508
C12N 1501
C12N 1554
C12N 1511

US Classification:

4352402

Abstract:

Cell lines useful for analysis of human homologous interchromosomal recombination are described. The cell lines carry endogenous mutant alleles of a selectable gene and can regenerate a selectable phenotype through homologous genetic recombination but not by large deletion of nucleotides or by chromosome loss. Assays using the cell lines permit quantitative and qualitative analysis of recombination events which occur between human chromosomes in somatic cells in culture. The assay relies on normal genes in their normal chromosomal site. The assays can be used to test for environmental agents which induce homologous recombination in human cells.

US Patent:

59118822, Jun 15, 1999

Filed:

Feb 29, 1996

Appl. No.:

8/610051

Inventors:

Mark M. Benjamin - Seattle WA
Yu-Jung Chang - Seattle WA
Christopher R. McMeen - Seattle WA

Assignee:

University of Washington - Seattle WA

International Classification:

B01D 1500
B01D 1504

US Classification:

210679

Abstract:

Adsorbent media are prepared by contacting support material with iron containing solutions, followed by drying to coat the support material with iron. Support material such as sand and olivine are described. The adsorbent material can be used to remove metal contaminants and natural organic matter from water.

US Patent:

53690729, Nov 29, 1994

Filed:

Dec 17, 1992

Appl. No.:

7/992644

Inventors:

Mark M. Benjamin - Seattle WA
Robert P. Bailey - Seattle WA
Thomas E. Bennett - Bellingham WA
Yu-Jung Chang - Seattle WA
Chi-Wang Li - Seattle WA
Marc A. Edwards - Boulder CO
Paul R. Anderson - Geneva IL

Assignee:

University of Washington - Seattle WA

International Classification:

B01J 2012
B01J 2010
B01J 2020
C02F 142

US Classification:

502 84

Abstract:

Adsorbent media are prepared by contacting support material with iron containing solutions, followed by drying to coat the support material with iron. Support materials such as sand and olivine are described. The adsorbent material can be used to remove metal contaminants and natural organic matter from water.

US Patent:

61137928, Sep 5, 2000

Filed:

Jun 1, 1998

Appl. No.:

8/981346

Inventors:

Mark M. Benjamin - Seattle WA
Yu-Jung Chang - Seattle WA

Assignee:

University of Washington - Seattle WA

International Classification:

B01D 1500
B01D 6116
C01G 4902

US Classification:

210636

Abstract:

Heated iron oxide particles are combined with membrane filtration to remove contaminants from water. The use of the heated particles reduces fouling of the membrane typically encountered when membranes alone are used to remove contaminants from water. The heated particles of iron oxide are regenerable and can be reconditioned to revive their adsorption capacity. The heated particles can be added to the stream of contaminant containing water upstream of the membrane.