1
Ronald N DeMartino: Well-treating compositions. Celanese Corporation, October 2, 1979: US04169798 (159 worldwide citation)

This invention provides a novel hydraulic fluid composition adapted for fracturing of subterranean formations, which comprises (1) an aqueous medium, (2) methyl ether of polygalactomannan gum as a gelling agent, and (3) a breaker additive for subsequent reduction of fluid viscosity.


2
Ronald N DeMartino, Anthony B Conciatori: Cationic polygalactomannan compositions. Celanese Corporation, June 21, 1977: US04031307 (149 worldwide citation)

This invention provides novel quaternary ammonium ethers of polygalactomannan having a degree of substitution between about 0.01 and 3.0, and further provides a process for producing quaternary ammonium ethers of polygalactomannan gums by contacting solid polygalactomannan gum with a haloalkyl-subst ...


3
Ronald N DeMartino, Hyun Nam Yoon, James B Stamatoff, Alan Buckley: Polyoxyalkylene polymers exhibiting nonlinear optical response. Celanese Corporation, Depaoli & O Brien, September 15, 1987: US04694066 (49 worldwide citation)

This invention provides novel polyoxyalkylene polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.


4
Ronald N DeMartino: Condensation polymers with pendant side chains exhibiting nonlinear optical response. Hoechst Celanese Corporaton, Depaoli & O Brien, July 12, 1988: US04757130 (32 worldwide citation)

This invention provides novel condensation polymers with pendant side chains which exhibit nonlinear optical response. The polymers have utility as a transparent optical component of optical switch or light modulator devices.


5
Ronald N DeMartino: Mixture of hydroxypropylcellulose and poly(maleic anhydride/alkyl vinyl ether) as a hydrocolloid gelling agent. Celanese Corporation, October 2, 1979: US04169818 (32 worldwide citation)

In one embodiment this invention provides a fluid composition which comprises an aqueous medium which is thickened with a synergistic viscosity mixture of hydroxypropylcellulose and poly(maleic anhydride/alkyl vinyl ether) as a novel hydrocolloid gelling agent.


6
Ronald N DeMartino: Polymers with pendant side chains exhibiting non-linear optical response. Hoechst Celanese Corporation, DePaoli & O Brien, October 25, 1988: US04779961 (32 worldwide citation)

This invention provides novel polyvinyl polymers with pendant side chains which exhibit nonlinear optical response. The polymers have utility as a transparent optical component of optical switch or light modulator devices.


7
Ronald N DeMartino: Organic nonlinear optical substrates. Hoechst Celanese Corporation, Depaoli & O Brien, January 19, 1988: US04720355 (28 worldwide citation)

This invention provides organic solid solutions which exhibit nonlinear optical properties.


8
Ronald N DeMartino, Hyun Nam Yoon, James B Stamatoff: Polymeric thin film waveguide media. Hoechst Celanese, Michael W Ferrell, March 26, 1991: US05002361 (27 worldwide citation)

This invention provides polymeric thin film optical waveguide media which exhibit nonlinear optical response, and which have utility as an optical waveguide component in all-optical and electrooptical light switch and light modulator devices. An invention waveguide medium consists of a thin film of ...


9
Ronald N DeMartino: Mixture of hydroxypropylcellulose and poly(maleic anhydride/alkene-1) as a hydrocolloid gelling agent. Celanese Corporation, October 23, 1979: US04172055 (27 worldwide citation)

In one embodiment this invention provides a novel fluid composition which comprises an aqueous medium which is thickened with a synergistic viscosity mixture of hydroxypropylcellulose and poly(maleic anhydride/alkene-1).


10
Ronald N DeMartino, Hyun Nam Yoon: Acrylic copolymers exhibiting nonlinear optical response. Hoecast Celanese, DePaoli & O Brien, January 31, 1989: US04801670 (27 worldwide citation)

This invention provides novel isotropic acrylic copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in optical light switch and light modulator devices.