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Dive into the research topics where Roger Lok is active.

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Archive | 1993

High chloride tabular grain emulsions and processes for their preparation

Gary Lawrence House; Thomas B. Brust; Debra L. Hartsell; Donald Lee Black; Michael G. Antoniades; Jerzy A. Budz; Yun C. Chang; Roger Lok; Sherrill Austin Puckett; Allen Keh-Chang Tsaur


Journal of Organic Chemistry | 1996

FACILE REARRANGEMENTS OF ALKYNYLAMINO HETEROCYCLES WITH NOBLE METAL CATIONS

Roger Lok; Ronald E. Leone; Antony J. Williams


Archive | 1982

Photographic speed increasing and latent image stabilizing compounds, silver halide emulsions, and photographic elements

Roger Lok; John Paul Freeman; William Baum


Journal of Organic Chemistry | 1972

Synthesis of azetidine-3-carboxylic acid

Arthur G. Anderson; Roger Lok


Archive | 1995

Iodochloride emulsions containing quinones having high sensitivity and low fog

Benjamin T. Chen; Roger Lok


Archive | 1994

High chloride emulsions having high sensitivity and low fog and improved photographic responses of HIRF, higher gamma, and shoulder density

Benjamin T. K. Chen; Roger Lok


Archive | 1996

Photographic print elements containing cubical grain silver iodochloride emulsions

Benjamin Teh-Kung Chen; James Lawrence Edwards; Roger Lok; Sanford Howard Ehrlich


Archive | 1996

Cubical grain silver iodochloride emulsions and processes for their preparation

Benjamin Teh-Kung Chen; James Lawrence Edwards; Roger Lok; Sanford Howard Ehrlich


Archive | 1998

Gold(I) sensitizers for silver halide emulsions

Roger Lok; Weimar W. White; Melanie W. Marshall


Archive | 1998

Photographic element containing water soluble bis Au(I) complexes

Roger Lok; Weimar W. White; Brian P. Cleary

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