Patents by Inventor Donald L. Wood

Donald L. Wood has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10151302
    Abstract: Exemplary compact wind power generation systems are configured to be suitable for residential and other locations where concealed moving parts are desirable. The wind power generation systems utilize a propeller disposed behind a contracting inlet. The propeller blades may be oriented “into the wind” to develop consistent torque across a variety of wind speeds. The propeller may rim-drive power generation components, further reducing vibration, or may share a common rotational axis with the power generation components.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: December 11, 2018
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventors: Timothy T. Takahashi, Calahan B. Campton, Donald L. Wood
  • Publication number: 20160169193
    Abstract: Exemplary compact wind power generation systems are configured to be suitable for residential and other locations where concealed moving parts are desirable. The wind power generation systems utilize a propeller disposed behind a contracting inlet. The propeller blades may be oriented “into the wind” to develop consistent torque across a variety of wind speeds. The propeller may rim-drive power generation components, further reducing vibration, or may share a common rotational axis with the power generation components.
    Type: Application
    Filed: February 15, 2016
    Publication date: June 16, 2016
    Inventors: Timothy T. Takahashi, Calahan B. Campton, Donald L. Wood
  • Patent number: 5911522
    Abstract: A portable display device for displaying educational material or student's work comprising a plurality of panels, each panel separated from the next adjacent panel by a score line to permit relative movement between adjacent panels, each panel comprising a base portion including a first and second corrugated substantially rigid section separated by a substantially rigid member and a writing surface adhered to the outer surface of the first corrugated substantially rigid section, the score line formed between adjacent panels extending entirely through the second corrugated substantially rigid section and a portion of the first corrugated substantially rigid section such that adjacent panels may be folded relative to each other for storage and transport or extended relative to each other for display.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: June 15, 1999
    Assignee: Showboard, Inc.
    Inventor: Donald L. Wood
  • Patent number: 5293705
    Abstract: A portable display device for displaying educational material or student's work comprising a plurality of panels, each panel separated from the next adjacent panel by a score line to permit relative movement between adjacent panels, each panel comprising a base portion including a first and second corrugated substantially rigid section separated by a substantially rigid member and a writing surface adhered to the outer surface of the first corrugated substantially rigid section, the score line formed between adjacent panels extending entirely through the second corrugated substantially rigid section and a portion of the first corrugated substantially rigid section such that adjacent panels may be folded relative to each other for storage and transport or extended relative to each other for display.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: March 15, 1994
    Assignee: Showboard, Inc.
    Inventor: Donald L. Wood
  • Patent number: 5035838
    Abstract: A nonionic surfactant based liquid laundry detergent formulation which consists essentially of between about 20 and about 30 percent by weight of one or more nonionic surfactants, between about 1 and 10 percent by weight of one or more of certain carboxysulfonate compounds which may be prepared, for example, by the direct reaction of a hydrocarbyl succinic anhydride with either an aminoalkyl sulfonate or a salt of isethionic acid, between about 2 and about 20 percent by weight of detergent builder, between about 2 and about 8 percent by weight of triethanol amine, and water. The formulation is very effective for removal of both particulate and oily soils from fabrics and for preventing their redeposition onto the fabrics during the wash. The formulations are further characterized as low-foaming and relatively insensitive to water hardness. The several components are highly compatible and can be formulated into stable, single-phase compositions, without the need for added hydrotropes and/or solubilizers.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: July 30, 1991
    Assignee: Shell Oil Company
    Inventors: Connie L. Merrill, Donald L. Wood
  • Patent number: 5034158
    Abstract: A nonionic surfactant based powdered laundry detergent formulation which consists essentially of between about 15 and about 25 percent by weight of one or more nonionic surfactants, between about 1 and 10 percent by weight of one or more of certan carboxysulfonate compounds which may be prepared, for example, by the direct reaction of a hydrocarbyl succinic anhydride with either an aminoalkyl sulfonate or a salt of isethionic acid, between about 2 and about 10 percent by weight of a silicate salt anticorrosion agent, between about 2 and about 40 percent by weight of detergent builder, and a sulfate salt filler. The combination of nonionic surfactant and anionic carboxysulfonate surfactant in the formulation provides a highly effective detergent performance. However, the formulation retains the beneficial properties of mildness, low foam generation, and biodegradability characteristic of nonionic surfactants.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: July 23, 1991
    Assignee: Shell Oil Company
    Inventors: Connie L. Merrill, Donald L. Wood
  • Patent number: 4794712
    Abstract: A portable display device for displaying educational material or student's work comprising a plurality of panels, each panel separated from the next adjacent panel by a score line to permit relative movement between adjacent panels, each panel comprising a base portion including a first and second corrugated substantially rigid section separated by a substantially rigid member and a writing surface adhered to the outer surface of the first corrugated substantially rigid section, the score line formed between adjacent panels extending entirely through the second corrugated substantially rigid section and a portion of the first corrugated substantially rigid section such that adjacent panels may be folded relative to each other for storage and transport or extended relative to each other for display.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: January 3, 1989
    Assignee: Showboard, Inc.
    Inventor: Donald L. Wood
  • Patent number: 4666558
    Abstract: A process for the deinking of waste newsprint, which comprises steps for(a) converting the waste newsprint to a pulp,(b) contacting and agitating the pulp in an aqueous medium containing a deinking agent comprising a mixture of (i) a water-soluble C.sub.9 to C.sub.16 alkanol ethoxylate component having an average of about 6.5 to 20 oxyethylene units per ethoxylate molecule and (ii) an oil-soluble C.sub.9 to C.sub.16 alkanol ethoxylate component having an average of about 0.5 to 3.5 oxyethylene units per ethoxylate molecule, said mixture containing the respective components (i) and (ii) in a relative weight ratio in the range from about 2:1 to 1:3, and said mixture being present in said aqueous medium in an amount between about 0.1 and 5 percent by weight based on the dry weight of the newsprint fiber, and(c) recovering deinked pulp from the aqueous medium.The invention offers high performance in the removal of ink from pulp fibers and substantially eliminates the foaming of aqueous surfactant solution.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: May 19, 1987
    Assignee: Shell Oil Company
    Inventors: Donald L. Wood, Louis Kravetz
  • Patent number: 4618400
    Abstract: A method for the deinking of wastepaper which comprises converting the wastepaper to a pulp, contacting the pulp with an aqueous medium of alkaline pH containing between about 0.2 and 2 percent by weight, calculated on dry weight of the pulp, of a deinking agent which is one or a mixture of certain thiol ethoxylate compounds, and treating the resulting pulp-containing medium to remove suspended or dispersed ink. The use of a thiol ethoxylate deinking agent offers a high level of performance in such a deinking process, both from the standpoint of the overall brightness and dirt count of paper prepared from the deinked pulp. In certain specific embodiments, the invention further comprises a step for treating thiol ethoxylate containing process streams and effluents to convert the surface active deinking agent to low-foaming sulfonyl derivatives, or to degrade the deinking agent to non-surface-active matter.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: October 21, 1986
    Assignee: Shell Oil Company
    Inventors: Donald L. Wood, Herbert E. Fried
  • Patent number: 4561933
    Abstract: A process for the deinking of xerographically printed wastepaper to produce reclaimed stock having high brightness and low dirt count. The process centers upon contact between a wastepaper pulp and an aqueous medium of alkaline pH containing a deinking agent consisting of a mixture of one or more C.sub.5 to C.sub.20 alkanols with nonionic surfactant to form a suspension of the ink in the aqueous medium. The deinking agent suitable for practice of the invention necessarily contains for every 10 parts by weight between 3 and 5 parts of alkanol and between 5 and 7 parts of nonionic surfactant, and is present in the aqueous medium in an amount between about 0.2 and 2.0 percent by weight, calculated on the dry weight of the pulp.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: December 31, 1985
    Assignee: Shell Oil Company
    Inventors: Donald L. Wood, Donald C. Wood
  • Patent number: 4474678
    Abstract: Detergent compositions particularly useful in hard-surface cleaning comprise an alkanol ethoxylate component which consists essentially of a mixture of compounds of the formula R--O--CH.sub.2 CH.sub.2 O--.sub.x H, wherein R is an alkyl group of from 8 to 18 carbon atoms, said alkyl group having a linear carbon chain in at least about 50 percent of the ethoxylate molecules; wherein the --O--CH.sub.2 --CH.sub.2 --O--.sub.x H ether substituent is, in at least 40 percent of the molecules of the mixture, bound to R at a carbon atom which is neither a terminal carbon atom nor a carbon atom adjacent to a terminal carbon atom; and wherein x has an average value for all ethoxylate molecules of the mixture which is in the range from about 3 to 9; said ethoxylate component being further characterized as having a hydrophile-lipophile balance that is between about 10.4 and 12.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: October 2, 1984
    Assignee: Shell Oil Company
    Inventors: Eugene F. Lutz, Donald L. Wood, Hans E. Kubitschek
  • Patent number: 4455248
    Abstract: A single-phase glycol-based antifreeze composition having superior performance in multi-metal corrosion protection contains certain silicate, phosphate, borate, nitrate, azole, and alkali compounds in specified proportions. Such compositions are of particular advantage in inhibiting the corrosion of aluminum surfaces at elevated antifreeze service temperatures.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: June 19, 1984
    Assignee: Shell Oil Company
    Inventor: Donald L. Wood
  • Patent number: 4426254
    Abstract: A process for extracting resin from wood pulp by contacting the pulp at elevated temperature with an aqueous medium comprising between about 2 and 15 percent by weight sodium hydroxide and between about 0.2 and 1.0% weight of an ethylene oxide condensation product, and also comprising in specified proportion one or more substances selected from the group consisting of a C.sub.12 alpha-olefin sulfonate and a particular C.sub.21 dicarboxylic acid. The sulfonate and dicarboxylic acid substantially enhance solubilization of the condensation product deresination agent in the highly polar aqueous medium.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: January 17, 1984
    Assignee: Shell Oil Company
    Inventors: Donald L. Wood, Judith E. Zweig
  • Patent number: 4086171
    Abstract: A lubricating composition having much improved high temperature performance characteristics comprises a major amount of a lubricating oil and a viscosity-index improving amount of a selectively sulfonated and selectively hydrogenated monoalkenyl arene-conjugated diene two block copolymer.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: April 25, 1978
    Assignee: Shell Oil Company
    Inventors: Donald L. Wood, Robert J. Moore, Robert B. Rhodes
  • Patent number: 3935954
    Abstract: A two-wheel type trailer having a forklift frame, pivotal about the axis of the trailer wheels, and a telescoping tongue means adapted to be connected with a prime mover. A hay bale is loaded on and unloaded from the forklift frame by pulling and pushing on the telescoping tongue by a prime mover. Remotely operated hydraulic control means "sets" the wheel brakes and unlocks latching means to permit the loading and unloading operation.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: February 3, 1976
    Inventors: Donald L. Woods, Kenneth G. Woods, Ray A. Woods
  • Patent number: H479
    Abstract: An improvement upon processes for the bleaching of wood pulp which comprise preparing an aqueous alkaline bleaching medium containing hydrogen peroxide and contacting the pulp with said medium under agitation. The improvement particularly comprises agitating a suspension of the pulp in an aqueous medium containing the hydrogen peroxide and between about 15 and 65 percent by mol of one or more of a limited class of alkenylsuccinic anhydride compounds which are found to promote the bleaching of the wood pulp by the hydrogen peroxide. The improved process of the invention is further found to be necessarily restricted to operation under limited conditions of bleaching mixture temperature and pH.The invention is usefully applied in the preparation of a wide variety of paper and paperboard products. The invention has particular benefit in accomplishing a high degree of bleaching performance at relatively low bleaching system temperatures.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: June 7, 1988
    Assignee: Shell Oil Company
    Inventors: Donald L. Wood, Eugene F. Lutz