Patents by Inventor Chi-Tai Wang

Chi-Tai Wang 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: 8140372
    Abstract: Method, system and program product for planning production for complementary demands are disclosed. In one embodiment, a method includes obtaining complementary demand values including at least one daily going rate (DGR) demand and a service demand; running a first planning production model in which the at least one DGR demand is included and the service demand is excluded; and running a second planning production model in which DGR related variables are fixed to values determined in the first planning production model and the service demand is included. Demands that are only considered by one of the planning production models are considered complementary demands.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: March 20, 2012
    Assignee: International Business Machines Corporation
    Inventors: Chih-Hui Chang, Brian T. Denton, Sanjay R. Hegde, Robert J. Milne, Stuart H. Smith, Chi-Tai Wang, Jacqueline N. Ward
  • Patent number: 7937475
    Abstract: The invention disclosed comprises a method for encouraging fair sharing of limited material inventory and capacity between multiple customers when creating a production plan the invention allocates resources among competing demands in a linear programming production planning system by first classifying the demands into fair share sets, wherein all demands within each set have the same priority, calculating the cumulative demand for each resource within each set, and then allocating the resources to the demands in order of fair share set priority. If, during the allocating process, the supply of a given resource cannot satisfy a given cumulative demand of a given set, the given resource is allocated proportionally (e.g., evenly or according to usage proportions) among all demands that contribute to the given cumulative demand within the given set. This is an advanced planning system for optimizing established planning objectives (e.g.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: May 3, 2011
    Assignee: International Business Machines Corporation
    Inventors: Brian T. Denton, Robert J. Milne, Chi-Tai Wang
  • Patent number: 7856287
    Abstract: A production planning technique inputs demands for products. Each of the demands having multiple due dates, and the multiple due dates having different priorities. An explosion process utilizing linear programming and heuristics is performed to identify demands for components that are used to make the products (the explosion process maintains the multiple due dates and corresponding priorities for the components) and performs an implosion process utilizing linear programming and heuristics to assign resources to the components considering the multiple due dates and corresponding priorities.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: December 21, 2010
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Milne, Robert A. Orzell, Chi-Tai Wang
  • Patent number: 7606743
    Abstract: A method, a system for practicing the method and a storage device storing the method for identifying product assets in a supply chain used to satisfy customer demands. The method including: receiving a feasible schedule of all components to be assembled into products; receiving customer schedules for delivery of the products; and generating from the feasible schedule, from the customer schedules and from bills of materials listing all components required for a particular product, a set of demand pegging records, the demand pegging records associating a quantity and an availability date of each component of each product with a required quantity of each of the products, each demand pegging record consistent with the feasible schedule.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: October 20, 2009
    Assignee: International Business Machines Corporation
    Inventors: Robert A. Orzell, Shivakumar P. Patil, Chi-Tai Wang
  • Patent number: 7590461
    Abstract: A production planning method inputs demands for products. The demands have multiple due dates, and the multiple due dates have different priorities. The method performs an explosion process utilizing linear programming and heuristics to identify demands for components that are used to make the products (the explosion process maintains the multiple due dates and corresponding priorities for the components) and performs an implosion process utilizing linear programming and heuristics to assign resources to the components considering the multiple due dates and corresponding priorities.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: September 15, 2009
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Milne, Robert A. Orzell, Chi-Tai Wang
  • Publication number: 20090228128
    Abstract: A production planning method inputs demands for products. The demands have multiple due dates, and the multiple due dates have different priorities. The method performs an explosion process utilizing linear programming and heuristics to identify demands for components that are used to make the products (the explosion process maintains the multiple due dates and corresponding priorities for the components) and performs an implosion process utilizing linear programming and heuristics to assign resources to the components considering the multiple due dates and corresponding priorities.
    Type: Application
    Filed: May 19, 2009
    Publication date: September 10, 2009
    Applicant: International Business Machines Corporation
    Inventors: Robert J. Milne, Robert A. Orzell, Chi-Tai Wang
  • Publication number: 20080221962
    Abstract: The invention disclosed comprises a method for encouraging fair sharing of limited material inventory and capacity between multiple customers when creating a production plan the invention allocates resources among competing demands in a linear programming production planning system by first classifying the demands into fair share sets, wherein all demands within each set have the same priority, calculating the cumulative demand for each resource within each set, and then allocating the resources to the demands in order of fair share set priority. If, during the allocating process, the supply of a given resource cannot satisfy a given cumulative demand of a given set, the given resource is allocated proportionally (e.g., evenly or according to usage proportions) among all demands that contribute to the given cumulative demand within the given set. This is an advanced planning system for optimizing established planning objectives (e.g.
    Type: Application
    Filed: May 22, 2008
    Publication date: September 11, 2008
    Applicant: International Business Machines Corporation
    Inventors: Brian T. Denton, Robert J. Milne, Chi-Tai Wang
  • Patent number: 7383337
    Abstract: The invention disclosed comprises a method for encouraging fair sharing of limited material inventory and capacity between multiple customers when creating a production plan. the invention allocates resources among competing demands in a linear programming production planning system by first classifying the demands into fair share sets, wherein all demands within each set have the same priority, calculating the cumulative demand for each resource within each set, and then allocating the resources to the demands in order of fair share set priority. If, during the allocating process, the supply of a given resource cannot satisfy a given cumulative demand of a given set, the given resource is allocated proportionally (e.g., evenly or according to usage proportions) among all demands that contribute to the given cumulative demand within the given set. This is an advanced planning system for optimizing established planning objectives (e.g.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: June 3, 2008
    Assignee: International Business Machines Corporation
    Inventors: Brian T. Denton, Robert J. Milne, Chi-Tai Wang
  • Publication number: 20080033586
    Abstract: Method, system and program product for planning production for complementary demands are disclosed. In one embodiment, a method includes obtaining complementary demand values including at least one daily going rate (DGR) demand and a service demand; running a first planning production model in which the at least one DGR demand is included and the service demand is excluded; and running a second planning production model in which DGR related variables are fixed to values determined in the first planning production model and the service demand is included. Demands that are only considered by one of the planning production models are considered complementary demands.
    Type: Application
    Filed: August 3, 2006
    Publication date: February 7, 2008
    Inventors: Chih-Hui Chang, Brian T. Denton, Sanjay R. Hegde, Robert J. Milne, Stuart H. Smith, Chi-Tai Wang, Jacqueline N. Ward
  • Publication number: 20070239299
    Abstract: A production planning method inputs demands for products. The demands have multiple due dates, and the multiple due dates have different priorities. The method performs an explosion process utilizing linear programming and heuristics to identify demands for components that are used to make the products (the explosion process maintains the multiple due dates and corresponding priorities for the components) and performs an implosion process utilizing linear programming and heuristics to assign resources to the components considering the multiple due dates and corresponding priorities.
    Type: Application
    Filed: April 6, 2006
    Publication date: October 11, 2007
    Inventors: Robert Milne, Robert Orzell, Chi-Tai Wang
  • Publication number: 20050177465
    Abstract: A method, a system for practicing the method and a storage device storing the method for identifying product assets in a supply chain used to satisfy customer demands. The method including: receiving a feasible schedule of all components to be assembled into products; receiving customer schedules for delivery of the products; and generating from the feasible schedule, from the customer schedules and from bills of materials listing all components required for a particular product, a set of demand pegging records, the demand pegging records associating a quantity and an availability date of each component of each product with a required quantity of each of the products, each demand pegging record consistent with the feasible schedule.
    Type: Application
    Filed: February 10, 2004
    Publication date: August 11, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Robert Orzell, Shivakumar Patil, Chi-Tai Wang
  • Publication number: 20050171786
    Abstract: The invention disclosed comprises a method for encouraging fair sharing of limited material inventory and capacity between multiple customers when creating a production plan. the invention allocates resources among competing demands in a linear programming production planning system by first classifying the demands into fair share sets, wherein all demands within each set have the same priority, calculating the cumulative demand for each resource within each set, and then allocating the resources to the demands in order of fair share set priority. If, during the allocating process, the supply of a given resource cannot satisfy a given cumulative demand of a given set, the given resource is allocated proportionally (e.g., evenly or according to usage proportions) among all demands that contribute to the given cumulative demand within the given set. This is an advanced planning system for optimizing established planning objectives (e.g.
    Type: Application
    Filed: January 29, 2004
    Publication date: August 4, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brian Denton, Robert Milne, Chi-Tai Wang