Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5628950 | Method and apparatus for producing multilayer plastic articles | Walter J. Schrenk, Ranganath K. Shastri, Herbert C. Roehrs, Mark A. Barger, Jeffrey Nicholas Bremmer | 1997-05-13 | $5,765,000 |
| 5540878 | Method for producing blow molded multilayer plastic articles | Walter J. Schrenk, Ranganath K. Shastri, Herbert C. Roehrs | 1996-07-30 | $8,442,000 |
| 5380479 | Method and apparatus for producing multilayer plastic articles | Walter J. Schrenk, Herbert C. Roehrs, Ranganath K. Shastri, Mark A. Barger, Jeffrey Nicholas Bremmer | 1995-01-10 | $5,834,000 |
| 5202074 | Method for producing injection molded multilayer articles | Walter J. Schrenk, Ranganath K. Shastri, Herbert C. Roehrs | 1993-04-13 | $9,275,000 |
| 5094793 | Methods and apparatus for generating interfacial surfaces | Walter J. Schrenk, Ranganath K. Shastri, Daniel J. Gosen | 1992-03-10 | $7,278,000 |