Patent 5916641 Issued on June 29, 1999. Estimated Expiration Date: August 1, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
427/487, Polymerization of coating utilizing direct application of electrical, magnetic, wave, or particulate energy (i.e., including cross-linking, curing, and hardening of organics)427/128, Magnetic coating427/130, With post-treatment of coating or coating material427/131, Applying superposed diverse coating or coating a coated base427/180, SOLID PARTICLES OR FIBERS APPLIED427/385.5, Resin, resin precursor, rubber, or hardenable oil-containing coating427/496, High energy electromagnetic radiation or high energy particles utilized (e.g., gamma rays, X-rays, atomic particles, i.e., alpha rays, beta rays, electrons, etc.)427/508, Low energy electromagnetic radiation utilized (e.g., UV, visible, IR, microwave, radio wave, actinic, laser, etc.)427/551, High energy electromagnetic radiation or high energy particles utilized (e.g., gamma ray, X-ray, atomic particle, i.e., alpha ray, beta ray, high energy electron, etc.)427/558, Ultraviolet light427/559, Fusing, curing, or annealing (e.g., ceramics, etc.)427/595, Electromagnetic or particulate radiation utilized (e.g., IR, UV, X-ray, gamma ray, actinic, microwave, radio wave, atomic particle; i.e., alpha ray, beta ray, electron, etc.)427/598Magnetic field or force utilized
The present invention provides for a number of interrelated methods for the production of random and ordered arrays of particles as well as films containing the same. In another aspect, the present invention relates to the random and ordered arrays of particles and films prepared therefrom. The ordered arrays are obtained by the use of ferrofluid compositions which may be curable, solidifiable or non-curing/non-solidifiable. Especially preferred arrays and films contain electrically conductive particles for use in electronic applications for effecting contact between leads or pads.
Other References
Berglund, R.N. et al., Generation of Monodisperse Aerosol Standards, Environmental Sci. and Tech. 7(2) p. 147 1973 (No month avail.)
Wu, H.F. et al., Effect of Surfactant Treatments on Interfacial Adhesion in Single Graphite/Epoxy Composites, Polymer Composites 12(4), 281 1993 (No month avail.)
Rao, A.V. et al., Evolution of Polymerisable Surfactants, Paint and Ink Int'l 15, 1995 (No month avail.)
Holmberg, K., Novel Surfactants for Paints, Surface Coatings Int'l (12) 481, 1993 (No month avail.)
Kim, Two- and Three-Dimensional Crystalization of Polymeric Microspheres by Micromolding in Capillaries, Advanced Materials, 8(3), 245-247, 1996 (No month avail.)
Williams et al, The Effects of Conducting Particle Distribution on the Behaviour of Anistropic Conducting Adhesives: Non-Uniform Conductivity and Shorting Between Connections, Journal of Electronics Manufacturing, 3, 85-94, 1993 (No month avail.)
Hogerton, Development Goals and Present Status of 3M's Adhesive Interconnection Technology, Journal of Electronics Manufacturing, 3, 191-197, 1993 (No month avail.)
Ogunjimi, A Review of the Impact of Conductive Adhesive Technology on Interconnection, Journal of Electronics Manufacturing, 2, 109-118, 1992 (No month avail.)
Liu, Applications of Anistropically Conductive Adhesives and Films as Surface Mount Solder Joints Substitute--a Survey, IVF-Internal Report 91/04, 32-36 (No date avail.)
Skjeltorp, A.T., One- and Two-Dimensional Crystallization of Magnetic Holes, Physical Review Letters, 51(25) 2306-2309, Dec. 19, 1983
Skjeltorp, A.T., Colloidal Crystals in Magnetic Fluid, Conference on Magnetism & Magnetic Materials, 163-164, Nov. 1983
Skjeltorp, A.T., Ordering Phenomena of Particles Dispersed in Magnetic Fluids, Journal of Applied Physics, 57(1), 3285-3289, Apr. 15, 1985
Skjeltorp, A.T., Monodisperse Particles and Ferrofluids: A Fruit-fly Model System, Journal of Magnetism and Magnetic Materials, 65, 195-203, 1987 (No month avail.)
Rosensweig, Magnetic Fluids, Annual Review of Fluid Mechanics, 19, 437-63, 1987 (No month avail.)
Soszek, Two Novel Additive Processes to Create Circuitry: Direct Laser Writing and Direct Electrostatic Transfer Deposirtion, Circuit World, 19(4), 12-15, 1993 (No month avail.)
Skeltorp A. T. et al., Condensation and Ordering of Colloidal Spheres Dispersed in a Ferrofluid, Physica A 176, 37, 1991 (No month avail.)
Ferromagnetic Materials, Wohlfarth, E.P. ed., vol. 2, ch. 8, p. 509 Charles, S.W., Popplewell, J., Martinet A. Elsevier Sci. Publishing Co. 1983 (No month avail.)
Aggregation Processes in Solution, Wyn-Jones, E., Gormally, J. Ch. 18, p. 509 (No date avail.)
Li and Morris, Structure and Selection Models for Anisotropic Conductive Adhesive Films, First Int'l Conference on Adhesive Joining Technology in Electronics Mfr., Berlin, Nov. 1994
Shaw, Chemistry and Technology of Epoxy Resins, B. Ellis ed., ch. 7 p. 206, Blackie Academic and Professional, 1993 (No month avail.)
Shiozawa, Electric Properties of Connections by Anisotropic Conductive Film, First Int'l Conf. on Adhesive Joining Technology in Electronics Mfr., Berlin, Nov. '94
Lyons & Dahringer, Handbook of Adhesives Technology, Pizzi & Mittal, eds., p. 578, 1994 (No month avail.)
Nakao Y., Preparation and Characterization of Noble Metal Solid Sols in Poly(methyl methacrylate), J. Chem. Soc. Chem. Commun. 826, 1993 (No month avail.)
Nakao Y. & Kaeriyama K., Preparation of Noble Metal Sols in the Presence of Surfactants and thie Properties, J. Colloid Interface Sci. 110(1), 82, 1986 (No month avail.)
Klabunde et al., Colloidal Metal Particles Dispersed in Monomeric and Polymeric Styrene and Methyl Methacrylate, Chemistry of Materials 1, 481, 1989 (No month avail.)
Cardenas T., G., Synthesis and Molecular Weights of Metal (Styrene-Methyl Methacrylate) Copolymer. III,, Polymer Bull. 27, 383, 1992 (No month avail.)
Cardenas T., G., Synthesis and Molecular Weights of of Metal Polyacrylonitriles, Polymer Bull. 26, 611, 1991 (No month avail.)
Rios P. et al., Poly(butadiene-acrylic acid(g)acrylonitrile(g)acrylic acid), Polymer Bull. 31, 293-296, 1993 (No month avail.)
Popplewell J. et al., Microwave Properties of Ferrofluid Composites, J. Magnetism and Magnetic Materials 54-57, 761, 1986 (No month avail.)
Kopcansky, P., The Observation of Various Structures of Magnetic Particles and Magnetic Holes in Ferrofluids, Acta Phys. Slov. 39(4), 259, 1989 (No month avail.)
Jin et al, Anisotropically Conductive Polymer Films With a Uniform Dispersion of Particles, IEEE Transcations on Components, Hybrids and Manufacturing Technology, 16(8), Dec. 1993, 972-977
Holman, Pilot Plant Helps Ablestik in Development of Specialized Tapes, Adhesives Age, Jan. 1995, 30-31
Hitachi Chemical Data Sheet, Specification of Anisolm AC 6073 (Date unknown)
Derwent Abstract 88-114223/17 Date unknown WPIL 211
Derwent Abstract 88-113862/17 Date unknown
Derwent Abstract 87-032270/05 Date unknown
Derwent Abstract 87-018716/03 Date unknown
Derwent Abstract 87-018508/03 Date unknown
Dyno Particles Brochure on polymer particles, Oct. 1991
McArdle et al., Novel Uniaxial Conductive Adhesives Polymerisable Ferrofluids and Conductive Magnetic Holes, Proc. Adhesives in Electronics, Stockholm, Sweden, Jun. 3-5, 1996
Author unknown, Fluid Has World's Highest Magnetic Flux Density, J. Electronic Engineering, 27 (280), 64-66, Apr. 1990
Derwent Abstract Secondary Accession C89-048416 Date unknown
Derwent Abstract 87-196399/28 Date unknown
Derwent Abstract 86-314250/48 Date unknown
Derwent Abstract 68-97057P/00 Date unknown
Derwent Abstract 82-55954E/27 Date unknown
Derwent Abstract AN 86-261618 Date Unknown
Reactive Surfactants and Reactive Protective Colloids--Brochure (May 1, 1996)
Reilly, J. O. et al., Anisotropic Adhesive Progress Report, Apr. 5, 1993
Ferrofluidics Corporation Technology Note, Date Unknow