During my time at Boeing, I have the wonderful opportunity to invent many new technologies with the help of many talented co-workers and a very capable internal intellectual property department.
Below is a list of my inventions, with the date that the US patent was granted. Many of these were also patented in foreign jurisdictions.
| Title | Granted Date | Number | Co-Inventors | Description |
| Method of molding parts using a tool sleeve for mold die | 2014-04-08 | US8691137B2 | Charles R Prebil James R Fox Alexander M Rubin Randall D Wilkerson | Using a family of sleeves with a single die to make stepped thickness parts using a Continuous Compression Molding machine |
| Method of Fabricating Composite Laminate Structures Allowing Ply Slippage During Forming | 2016-01-19 | US20130149498A1 | Randall D Wilkerson James R Fox Charles R Prebil | Method to specifically tack plies together to allow proper forming during consolidation |
| Staggered bevel for continuous compression molding tooling dies | 2016-05-31 | US9352518B2 | Charles R Prebil Randall D Wilkerson Neal Froeschner | Method for designing the interface between a sleeve and die for continuous compression molding |
| System and method of joining components | 2016-06-07 | US9358764B2 | Charles R Prebil James R Fox | Film joining of thermoplastic composites |
| System and method for applying pressure to structural components | 2017-01-17 | US9545778B2 | Ryan J Merriman James R Fox Charles R Prebil Steven J Burpo | Application of pressure to a joined assembly using discs and straps |
| Metallic bladders | 2017-05-30 | US9662742B2 | Marc Rollo Matsen Alexander M Rubin Randall D Wilkerson Carey E Wilkinson James R Fox Charles R Prebil Gregory J S Hickman Jeffery Lee Marcoe | Use of a metallic bladder when forming parts with induction consolidation |
| Consolidation of complex contoured thermoplastic structures | 2018-07-24 | US10029398B2 | Marc Rollo Matsen Jeffery Lee Marcoe Gregory J S Hickman Alexander M Rubin Lee Charles Firth Randall D Wilkerson James R Fox Charles R Prebil | Consolidation of thermoplastic composite parts with induction consolidation |
| System and method for manufacturing off-axis prepreg material | 2018-09-18 | US10076883B2 | Charles R Prebil James R Fox Randall D Wilkerson | Creation of off-axis prepreg material with a robotic fabrication process |
| Method for fabricating tapered thermoplastic composite parts | 2019-03-19 | US10232532B1 | Charles R Prebil James R Fox Randall D Wilkerson Sharon S Y Wong | Fabrication of a tapered height beam using the continuous compression molding process |
| Forming thermoplastic composite parts having steered fiber orientations | 2019-10-08 | US10434726B1 | Gregory J S Hickman James R Fox Charles R Prebil Randall D Wilkerson | Using an automated fiber placement machine to create a steered fiber layup on a near-net shape tool |
| Method and apparatus for continuously fabricating a composite sandwich structure | 2020-11-03 | US10821651B2 | Christopher H Childers Cori A Jackson Charles Prebil | Fabrication of a composite sandwich structure in a continuous fashion, including adding a color film to the surface |
| Methods and apparatus for thermoplastic welding | 2021-01-26 | US20200180231A1 | Marc R Matsen Bret A Voss Alexander M Rubin Charles R Prebil | Method to weld thermoplastic composites with smart susceptors and induction coils |
| Method for fabricating thermoplastic composite parts | 2022-12-13 | US11524471B2 | Charles R Prebil James R Fox | Using sleeves to make a stepped thickness composite parts |
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