John C Mcbride

US Patent:

20120295306, Nov 22, 2012

Filed:

Apr 21, 2010

Appl. No.:

13/265107

Inventors:

Devin Hedley Currie - Litchfield NH, US
John McBride - Lyme NH, US
Adam Guss - Etna NH, US

Assignee:

THE TRUSTEES OF DARTMOUTH COLLEGE - Hanover NH

International Classification:

C12N 15/74
C07H 21/04
C12N 15/63
C12P 21/00
C12N 1/21

US Classification:

435 691, 435471, 4352523, 4353201, 536 231

Abstract:

Bacteria consume a variety of biomass-derived substrates and produce ethanol. The scaffoldin gene cipA from is modified to generate a mutated gene with enhanced genetic stability. This mutated cipA gene can be introduced into a heterologous host, such as . Other cellulosome components may be introduced into the host to build a full-sized cellulosome in . Manipulation of the scaffoldin genes provides a new approach for enhancing ethanol production by biomass-fermenting microorganisms.

US Patent:

59995505, Dec 7, 1999

Filed:

Jan 8, 1999

Appl. No.:

9/227592

Inventors:

Arthur J. Bellemore - Salem NH
John M. McBride - Peabody MA

Assignee:

Agfa Corporation - Wilmington MA

International Classification:

H01S 300

US Classification:

372 38

Abstract:

A laser diode driver system automatically tracks the difference between the steady state operating point of a feedback signal in response to a laser diode driver circuit operation and the steady state operating point of the same feedback signal in response to a dummy driver circuit operation. That difference is used to compensate the dummy driver circuit operation such that its operating point correlates with the laser diode driver circuit operation. Further, in accordance with a second aspect of the present invention, a laser diode driver system automatically tracks the difference between the steady state operating point of a feedback signal in response to the quiescent laser diode driver circuit operation and the steady state operating point of the same feedback signal in response to the output of a high frequency oscillator. That difference is used to adjust a variable current source such that a dummy driver circuit is not disabled until the laser diode turn-on time delay has expired. The disablement is extended when the current drawn by the current source changes the discharge time of a capacitor that is connected to the enable signal for the dummy driver circuit.