1
Srinivasan Sridharan, Tack J Whang, Gordon J Roberts: High temperature sealing glass. Ferro Corporation, Rankin Hill Porter & Clark, September 26, 2000: US06124224 (41 worldwide citation)

The present invention provides high temperature sealing glass compositions for use in producing mechanically and chemically durable electrically insulating hermetic glass seals between materials such as zirconia, alumina, fosterite, steatite, carbon steels, stainless steels, and superalloys. High te ...


2
Gordon J Roberts: Bismuth-containing lead-free glass enamels and glazes of low silica content. Ferro Corporation, Renner Otto Boisselle & Sklar, October 12, 1993: US05252521 (39 worldwide citation)

This invention relates to a lead-free glass coating made by firing a lead-free glass composition comprising in weight percent from about 35% to about 77% of bismuth oxide, from about 10% to about 33% of boron oxide, and from about 10% to about 32% of zinc oxide at a temperature sufficient to fuse an ...


3
Gordon J Roberts, James H Heasley: Unstable devitrifiable glasses and friction materials containing them. Ferro Corporation, Wilson Fraser Barker & Clemens, January 8, 1980: US04182437 (38 worldwide citation)

A combined friction modifier and reinforcing agent and friction materials containing it are disclosed in which the combined modifier and reinforcing agent comprises a substantially amorphous, unstable, finely divided glass convertible in response to heat generated by the friction material during use ...


4
Clifford G Ruderer, Gordon J Roberts, Hasan B Emlemdi: Lead-free glass coatings. Ferro Corporation, Rankin Hudak & Hill, April 26, 1994: US05306674 (22 worldwide citation)

This invention relates to a lead-free glass coating made by firing a lead-free glass enamel composition comprising a glass frit having by weight from about 20% to about 40% zinc oxide, from about 20% to about 32% boron oxide, and from about 10% to about 30% silicon dioxide, from about 0% to about 12 ...


5
S K Muralidhar, Gordon J Roberts, Aziz S Shaikh, David J Leandri, Dana L Hankey, Thomas J Vlach: Low dielectric, low temperature fired glass ceramics. Ferro Corporation, Rankin Hudak & Hill, November 2, 1993: US05258335 (20 worldwide citation)

A low dielectric, low temperature fired glass ceramic produced by firing at about 800.degree.-900.degree. C. a mixture comprising at least one glass consisting of, by weight percent, 0 to 50% B.sub.2 O.sub.3, 35 to 65% CaO, and 10 to 65% SiO.sub.2, and selected from the glasses of CaO-B.sub.2 O.sub. ...


6
S K Muralidhar, Aziz S Shaikh, Gordon J Roberts, Dana L Hankey, David J Leandri, Thomas J Vlach: Low dielectric, low temperature fired glass ceramics. Ferro Corporation, Renner Otto Boisselle & Sklar, November 17, 1992: US05164342 (19 worldwide citation)

A low dielectric, low temperature fired glass ceramic produced by firing at about 800.degree.-950.degree. C. a mixture comprising at least one glass consisting of, by weight percent, 0 to 50% B.sub.2 O.sub.3, 35 to 65% CaO, and 10 to 65% SiO.sub.2 l , and selected from the glasses of CaO-B.sub.2 O.s ...


7
Clifford G Ruderer, Gordon J Roberts, Robert C Stroup: Partially crystallizing enamel containing Zn.sub.2 SiO.sub.4 to be used for automobile side and rear lights. Ferro Corporation, Renner Otto Boisselle & Sklar, October 6, 1992: US05153150 (19 worldwide citation)

The present invention provides a new and useful composition and method of using the same for producing an enamel finish on a formed section of glass. The composition partially crystallizes upon heating, thereby helping to prevent the forming and handling equipment from sticking and/or adhering to th ...


8
Kevin W Allison, Dana L Hankey, Edward Stadnicar Jr, Gordon J Roberts: Thick film conductor compositions for use with an aluminum nitride substrate. Ferro Corporation, Renner Otto Boisselle & Sklar, February 18, 1992: US05089172 (19 worldwide citation)

A thick film conductor composition adapted to be bonded to an aluminum nitride substrate is provided which comprises a sufficient amount of conductive metallic material to render the conductor composition electrically conductive when bonded to the substrate, a glass frit binder for the metallic mate ...


9
Srinivasan Sridharan, Robert P Blonski, Hasan B Emlemdi, Gordon J Roberts, Ivan H Joyce: Glass enamel for automotive applications. Ferro Corporation, Rankin Hill Porter & Clark, August 22, 2000: US06105394 (16 worldwide citation)

The present invention provides lead and cadmium free glass enamel compositions. In one embodiment of the invention, glass frits include from about 0.1 percent by weight to about 15 percent by weight Nb.sub.2 O.sub.5, less than about 3 percent by weight alkali metal oxides, less than about 3 percent ...


10
Gordon J Roberts: Lead-free U.V. absorbing glass. Ferro Corporation, Walter C Danison, August 22, 1989: US04859637 (16 worldwide citation)

The present invention relates to an improved U.V. absorbing glass composition comprising from about 75 to about 98 parts by weight of a lead oxide free base glass having dissolved therein from about 2 to about 25 parts by weight of a U.V. additive selected from the group consisting of cerium oxide, ...