David A Carlson

US Patent:

8450094, May 28, 2013

Filed:

Mar 3, 2010

Appl. No.:

12/717002

Inventors:

Neelakantam V. Narendranath - Sioux Falls SD, US
David Charles Carlson - Yankton SD, US

Assignee:

Poet Research, Inc. - Sioux Falls SD

International Classification:

C12P 7/10
C12P 7/08
C12P 7/06
C12P 7/00

US Classification:

435161, 435132

Abstract:

A system and method for managing an ethanologen for use in biorefinery is disclosed. The method for propagating ethanologen for use in the production of a fermentation product from biomass omprises the steps of providing a medium for propagation of ethanologen and supplying a first cell mass of ethanologen to the medium. A first cell mass of ethanologen is propagated into a larger second cell mass of ethanologen. The system for propagating ethanologen for use in the production of a fermentation product from biomass comprises a first stage comprising a first vessel configured to maintain a medium comprising ethanologen and a second stage comprising a second vessel configured to maintain a medium supplied from the first stage.

US Patent:

20040126796, Jul 1, 2004

Filed:

Oct 7, 2003

Appl. No.:

10/679378

Inventors:

David Carlson - Gaithersburg MD, US
James Lazar - Bethesda MD, US
Michael Connolly - Ijamsville MD, US

International Classification:

C12Q001/68
C07H021/04
C12N001/08

US Classification:

435/006000, 435/270000, 536/025400

Abstract:

Methods and compositions are provided for extracting DNA from tissues, hair, teeth, bone, plant material, solid matrices and other samples from which DNA extraction is generally regarded as being difficult. DNA may quickly be extracted from samples, for example, in just 5 minutes to 2 hours, without enzymatic digestion or the use of toxic organic chemicals such as phenol, chloroform, guanidine thiocyanate or 2-mercaptoethanol.

US Patent:

20100227369, Sep 9, 2010

Filed:

Mar 3, 2010

Appl. No.:

12/717015

Inventors:

Neelakantam V. Narendranath - Sioux Falls SD, US
David Charles Carlson - Yankton SD, US

International Classification:

C12P 7/10
C12M 1/16

US Classification:

435165, 4353031

Abstract:

A biorefinery and a system for producing a fermentation product from biomass are disclosed. The biorefinery comprises a preparation system to prepare the biomass into prepared biomass; a pre-treatment system to pre-treat the prepared biomass with a dilute acid for separation into a first component from which pentose can accessed for fermentation and a second component from which hexose can be made available for fermentation; a first treatment system to treat the first component into a treated first component by removing removed components from the first component; a first fermentation system to produce a first fermentation product from the pentose; a distillation system to recover ethanol from the first fermentation product; and a treatment system to process removed components. The biomass comprises lignocellulosic material, which comprises at least one of corn cobs, corn plant husks, corn plant leaves and corn plant stalks.

US Patent:

45840288, Apr 22, 1986

Filed:

Sep 24, 1984

Appl. No.:

6/653559

Inventors:

Jacques I. Pankove - Princeton NJ
David E. Carlson - Yardley PA

Assignee:

RCA Corporation - Princeton NJ

International Classification:

H09L 21265

US Classification:

148 15

Abstract:

A p-type impurity in a silicon semiconductor structure is at least partially neutralized by exposure to atomic hydrogen. The subject method provides an excellent means of modifying the profile of the impurity. Suitable impurities include boron, aluminum, gallium and indium.

US Patent:

39912272, Nov 9, 1976

Filed:

Jan 27, 1975

Appl. No.:

5/544568

Inventors:

David Emil Carlson - Yardley PA
Lawrence Alan Goodman - East Windsor NJ

Assignee:

RCA Corporation - New York NY

International Classification:

B05D 306

US Classification:

427 39

Abstract:

A D. C. glow discharge is applied to a heated glass substrate coated with a conductive layer in the form of a pattern in an evacuated chamber, to which chamber certain amounts of oxygen and a volatile tin composition have been added. A glass substrate is produced which is coated with a patterned, transparent, conductive coating of tin oxide, wherein the surface region of the glass has been depleted of alkali metal ions.

US Patent:

44531737, Jun 5, 1984

Filed:

Apr 27, 1982

Appl. No.:

6/372103

Inventors:

David E. Carlson - Yardley PA
Brown F. Williams - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

H01L 4500
H01L 2714
H01L 3100
H01L 2904

US Classification:

357 30

Abstract:

A photocell comprises a p-i-n amorphous silicon structure having a wide bandgap layer adjacent to either the p-type or n-type layer. This structure reduces the absorption of light entering the photocell and the back-diffusion of minority carriers.

US Patent:

42171482, Aug 12, 1980

Filed:

Jun 18, 1979

Appl. No.:

6/049496

Inventors:

David E. Carlson - Yardley PA

Assignee:

RCA Corporation - New York NY

International Classification:

H01L 3106
B05D 306

US Classification:

136 89SJ

Abstract:

An amorphous silicon solar cell incorporates a region of intrinsic hydrogenated amorphous silicon fabricated by a glow discharge wherein said intrinsic region is compensated by P-type dopants in an amount sufficient to reduce the space charge density of said region under illumination to about zero.

US Patent:

46908307, Sep 1, 1987

Filed:

Feb 18, 1986

Appl. No.:

6/830072

Inventors:

Charles R. Dickson - Trenton NJ
David E. Carlson - Yardley PA

Assignee:

Solarex Corporation - Rockville MD

International Classification:

B05D 306

US Classification:

427 38

Abstract:

Compounds having the formula (MX. sub. 3). sub. n M'X. sub. 4-n wherein M and M' are different Group 4A atoms, at least one of M and M' is silicon, X is hydrogen, halogen or mixtures thereof, and n is an integer between 1 and 4, inclusive, can be activated by dehydrogenation or dehalogenation. These compounds are useful as deposition feedstock materials in the formation of hydrogenated amorphous silicon alloys useful in the fabrication of photovoltaic and other electronically active devices. Dopants having the formula (SiX. sub. 3). sub. m L X. sub. 3-m wherein L is a Group 5A atom selected from the group of phosphorus, arsenic, antimony and bismuth, X is hydrogen, halogen or mixtures thereof and m is an integer between 1 and 3, inclusive, can be activated by dehydrogenation or dehalogenation. These compounds are useful in the fabrication of negatively-doped hydrogenated amorphous silicon alloys useful in the fabrication of photovoltaic and other electronically active devices. Dopants having the formula YJX. sub.