Kennan
John Kennan, Midland, MI US
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20100048795 | SILICONE POLYETHER BLOCK COPOLYMERS HAVING ORGANOFUNCTIONAL ENDBLOCKING GROUPS - Silicone polyether copolymers are disclosed having the average formula E-B-[AB] | 02-25-2010 |
John J. Kennan, Midland, MI US
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20140287247 | Method of Forming a Gel Having Improved Thermal Stability - A gel having improved thermal stability is the hydro silylation reaction product of (A) an organopolysiloxane having an average of at least 0.1 silicon-bonded alkenyl group per molecule and (B) a cross-linker having an average of at least 2 silicon-bonded hydrogen atoms per molecule. (A) and (B) react via hydrosilylation in the presence of (C) a hydrosilylation catalyst and (D) a heated reaction product of iron acetylacetonate. The iron acetylacetonate is present prior to heating in an amount of from about 0.05 to about 30 weight percent based on a total weight of (A) and (B). The gel is formed using a method that includes the steps of (I) heating the iron acetylacetonate to form the (D) heated reaction product of the iron acetylacetonate and (II) combining (A), (B), (C) and (D) to effect the hydrosilylation reaction of (A) and (B) in the presence of (C) and (D) to form the gel. | 09-25-2014 |
20140291872 | Gel Having Improved Thermal Stability - A gel has improved thermal stability and is the ultraviolet hydrosilylation reaction product of (A) an organopolysiloxane having an average of at least 0.1 silicon-bonded alkenyl group per molecule and (B) a cross-linker having an average of at least 2 silicon-bonded hydrogen atoms per molecule. (A) and (B) react via hydrosilylation in the presence of (C) a UV-activated hydrosilylation catalyst comprising at least one of platinum, rhodium, ruthenium, palladium, osmium, and iridium, and (D) a thermal stabilizer. The (D) thermal stabilizer is present in an amount of from about 0.01 to about 30 weight percent based on a total weight of (A) and (B) and having transparency to UV light sufficient for the ultraviolet hydrosilylation reaction product to form. | 10-02-2014 |
Wayne Kennan, Palo Alto, CA US
Patent application number | Description | Published |
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20120235750 | AMPLIFICATION DEVICE HAVING COMPENSATION FOR A LOCAL THERMAL MEMORY EFFECT - In one embodiment, an amplification device has a temperature differential sensing circuit that reduces a local thermal memory effect. The amplification device may include an amplification circuit and biasing circuitry. The amplification device is operable to receive an input signal and generate and amplified output signal. The biasing circuitry generates a biasing signal that sets the quiescent operating level of the amplified output signal. The temperature differential sensing circuit provides a bias level adjustment signal that adjusts the biasing signal to maintain the quiescent operating level of the amplified output signal at a desired level. | 09-20-2012 |