David L 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:

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:

20210348198, Nov 11, 2021

Filed:

Jul 23, 2021

Appl. No.:

17/384003

Inventors:

- Sioux Falls SD, US
Malgorzata M. Slupska - Sioux Falls SD, US
David Charles Carlson - Brandon SD, US
Benjamin M. Gerdes - Yankton SD, US
Neelakantam V. Narendranath - Fort Mill SC, US
David D. Bushong - Sioux Falls SD, US

International Classification:

C12P 7/06
C12M 1/00
C12N 1/18
C12N 9/26

Abstract:

Systems and methods that include starch derived from grain as a carbon source for propagation of microorganisms.

US Patent:

20190256873, Aug 22, 2019

Filed:

Jun 12, 2017

Appl. No.:

16/310173

Inventors:

- Sioux Falls SD, US
Malgorzata M. Slupska - Sioux Falls SD, US
David Charles Carlson - Brandon IA, US
Benjamin M. Gerdes - Yankton SD, US
Neelakantam V. Narendranath - Sioux Falls SD, US
David D. Bushong - Sioux Falls SD, US

International Classification:

C12P 7/06
C12M 1/00
C12N 1/18
C12N 9/26

Abstract:

Systems and methods that include starch derived from grain as a carbon source for propagation of microorganisms.

US Patent:

20190016829, Jan 17, 2019

Filed:

Jul 12, 2018

Appl. No.:

16/033705

Inventors:

- Sioux Falls SD, US
David Charles Carlson - Brandon SD, US

International Classification:

C08B 37/00
C13K 1/04
C02F 11/12

Abstract:

The present disclosure relates to a dewatering systems, and related methods, that are adapted to convey lignocellulosic biomass to separate at least a portion of the water from a lignocellulosic biomass slurry and accumulate the dewatered lignocellulosic biomass. The dewatering system also includes a headspace occupied by a gas that is at a pressure that facilitates transferring the accumulated biomas into a pretreatment reactor having a pressurized headspace. Such a dewatering system can prevent undue mixing and backflow of gas (e.g., steam) from the pretreatment reactor.