Patents Represented by Attorney James S. Waldron
  • Patent number: 5837728
    Abstract: Esters and amides of 9-cis-retinoic acid are synthesized, formulated into pharmaceutically acceptable carriers and administered for the treatment of acne vulgaris, cystic acne, hyper-pigmentation, hypo-pigmentation, psoriasis, dermal and epidermal hypoplasia and kerotoses, the reduction of wrinkling of the skin as an incident of aging and actinic damage, normalization of the production of sebum, the reduction of enlarged pores, promoting the rate of wound healing, limiting of scar tissue formation during healing and the like. They are additionally useful for treatment or amelioration of the same additional classes of skin disorders as is retinoic acid itself and other retinoids. These disorders include ichthyoses (e.g., ichthyosis hystrix, epidermolytic hyperkeratosis, and lamellar ichthyosis), follicular disorders (e.g., pseudofolliculites, senile comedones, nevus comidonicas, and trichostatis spinulosa), benign epithelial tumors (e.g.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: November 17, 1998
    Assignee: Molecular Design International
    Inventor: William P. Purcell
  • Patent number: 4801383
    Abstract: This invention relates to a filtration roving with the cross section of the roving exhibiting portions more tightly twisted than the remainder of the roving.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 31, 1989
    Assignee: MEMTEC North America Corp.
    Inventors: Michael A. Hoffmann, Robert J. Schmitt
  • Patent number: 4774039
    Abstract: There is disclosed, in one aspect, an improved highly asymmetric membrane comprising a skin and a porous asymmetric support. The skin contains pores which have an mean pore diameter of from about 0.005 to about 3.0 microns and the asymmetric support comprises a reticulated structure which contains pores which have pore diameters of from about 10 to about 20,000 times as large as the pore diameter of the pores of the skin. The membrane has a bulk porosity greater than about 70%. In another aspect, there is disclosed a process for preparing these membranes. This process comprises casting a polymer dope while the dope is in an unstable liquid dispersion condition. The concentration of polymer in the polymer dope should be high enough to produce a coherent membrane yet low enough to form a substantially all-reticulated structure within the asymmetric support. The membranes are characterized by high flow rates, excellent retention properties, and improved resistance to fouling.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: September 27, 1988
    Assignee: Brunswick Corporation
    Inventor: Wolfgang J. Wrasidlo
  • Patent number: 4771079
    Abstract: Syntactic foam graphic arts print media are provided which are particularly suitable for application to a substrate using high speed mechanical printing processes. The invention involves adding to a basic print medium a minor amount of pre-expanded, nonfriable, thermoplastic polyvinylidene chloride based microspheres substantially heat stable between about C. and C., having a particle size of about 10 to 100 microns in diameter, to produce syntactic foams having unlimited shelflife stability. The print media thereby produced may be applied to any known substrate in any desired graphic pattern.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: September 13, 1988
    Inventor: George E. Melber
  • Patent number: 4766389
    Abstract: An arrangement for a tactile sensing system involved in the determination of object shape, contour, orientation and detection of slip finding one use in real time control of robotically manipulated tools. The sensor uses contact between the object and a gripper upon which the sensor is disposed wherein the object surface forms one plate of the sensing electrode.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: August 23, 1988
    Assignee: Extrude Hone Corporation
    Inventors: Lawrence J. Rhoades, Donald Risko, Ralph L. Resnick
  • Patent number: 4754115
    Abstract: An EDM apparatus for high speed machining of a workpiece and redressing of a graphite electrode by an ultrasonic machining tool or a total form machining tool. When the electrode becomes worn the workpiece clamped on a table (1) is shifted away by a slideway mechanism (4) so that a master on another table (2) confronts the worn electrode. The electrode is then redressed and the workpiece is slid back into position by the slideway mechanism (4) for more machining by the redressed electrode.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: June 28, 1988
    Assignee: Extrude Hone Corporation
    Inventor: Lawrence J. Rhoades
  • Patent number: 4681600
    Abstract: A method is provided for making improved molded abrasive tools by applying centifugal force and/or vibratory action to the abrasive particles during the molding operation. The abrasive is thereby forced and/or sifted preferentially into a closely packed surface layer with close conformity to the mold surface.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: July 21, 1987
    Assignee: Extrude Hone Corporation
    Inventors: Lawrence J. Rhoades, William D. Jenkins, David D. Pertle
  • Patent number: 4677120
    Abstract: Esters and amides of 13-cis-retinoic acid are disclosed which are used for the treatment of acne and skin diseases.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: June 30, 1987
    Assignee: Molecular Design International
    Inventors: Harlie A. Parish, William P. Purcell
  • Patent number: 4656788
    Abstract: A mechanism for imparting relative orbital motion to at least two associated driven elements. The driven elements are driven in an eccentric path, usually with a common drive axis, where the angular displacement of each such path is controlled while relative rotation of the driven elements is precluded.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: April 14, 1987
    Assignee: Extrude Hone Corporation
    Inventors: Lawrence J. Rhoades, Nicholas P. Nokovich
  • Patent number: 4640109
    Abstract: A removable locking device for securing latch handles for the cargo doors of trucks, trailers, rail cars and the like against unauthorized access, comprising a slide box member permanently mounted to the exterior of the door, a removable slide member, a latch handle retaining means, and a cylinder lock.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: February 3, 1987
    Inventors: John M. Schaublin, Donna S. Schaublin
  • Patent number: 4634552
    Abstract: A polymeric diamino triazine dispersing agent comprising a compound the essential parts of which area diamino triazine group anda polymer chain having a molecular weight of at least 1000, which compound has been obtained by reacting a diamino triazine and a polymer chain having a molecular weight of at least 1000 with an oxiran containing compound. The dispersing agent comprises compounds of the formulas ##STR1## wherein R.sub.1 is aryl or alkyl having 1-8 carbon atoms,R.sub.2 is a hydrocarbon radical optionally comprising one or more ether groups and having a molecular weight of less than 200, andR.sub.3 is a polymer chain residue having a molecular weight of at least 1000.The dispersing agent can be used for dispersing solid particles, such as pigment particles, in a non polar solvent.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: January 6, 1987
    Assignee: Bergvik Kemi AB
    Inventor: Giuseppe Canestri
  • Patent number: 4629563
    Abstract: Improved ultraporous and microporous membranes are provided with an entirely reticulated structure free of large finger voids. The reticulated support structure has gradually increasing pore size which reaches a maximum of from about 10 to about 20,000 times the diameter of the skin pores at the opposite face. The skin is very thin and has controllable highly uniform skin pores of from about 0.003 to about 3.0 microns in diameter. The structure offers highly desirable properties to such membranes.
    Type: Grant
    Filed: August 11, 1981
    Date of Patent: December 16, 1986
    Assignee: Brunswick Corporation
    Inventor: Wolfgang J. Wrasidlo
  • Patent number: 4614109
    Abstract: The invention pertains to a method and device for testing the permeability of membrane filters by submitting a wetted membrane filter on its inlet side to a predetermined testing gas pressure within a first closed system and by measuring pressure variation over time within the closed system. The object of the method of the invention is a sensitive testing method permitting permeability, and thus pore size, of a membrane filter to be determined exclusively by measurements performed on the inlet side of the membrane filter. Such measurement is performed by measuring a pressure differential with respect to a reference pressure, or by measuring the quantity of gas per unit of time flowing with respect to a reference pressure system, or else by measuring the pressure differential twice and draining, during the second measurement, a predetermined quantity of gas from the space being tested.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: September 30, 1986
    Assignee: Brunswick Corporation
    Inventor: Frieder Hofmann
  • Patent number: 4181762
    Abstract: Fibers, yarns and fabrics are produced from polymers, such as the copolymers of ethylene and vinyl acetate, having an elastic modulus of from 5,000 to 60,000 psi. The fibers are also characterized by an area moment of inertia of from 400.times.10.sup.-14 to 7,000.times.10.sup.-14 in.sup.4 and a stiffness parameter of from 1.times.10.sup.-5 to 1.times.10.sup.-8 lb-in.sup.2. Multiple fibers are spun into yarn, preferably cross-linked either chemically or by irradiation and are formed into pile fabrics for carpeting and similar uses. The pile fabric preferably has a minimum of 4,000 fibers per in.sup.2 of backing and a minimum pile height of 1/8 inch.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: January 1, 1980
    Assignee: Brunswick Corporation
    Inventor: Joseph C. Benedyk