Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6465564 | Overhead projector inks | — | 2002-10-15 |
| 5969004 | Aqueous inks | — | 1999-10-19 |
| 5951188 | Aqueous ink pen | — | 1999-09-14 |
| 5919858 | Erasable inks | — | 1999-07-06 |
| 5804633 | Permanent aqueous marker inks | Kimberly Sanborn | 1998-09-08 |
| 5686519 | Permanent aqueous marker inks | Kimberly Sanborn | 1997-11-11 |
| 5599853 | Erasable inks | — | 1997-02-04 |
| 5512623 | Permanent aqueous marker inks | Kimberly Sanborn | 1996-04-30 |
| 5470904 | Permanent aqueous marker inks | Kimberly Sanborn | 1995-11-28 |
| 5378752 | Ink eradicator system including film forming polymer | Donald P. White | 1995-01-03 |
| 5362167 | Fiber marker including an erasable ink | — | 1994-11-08 |
| 5338793 | Erasable ink | — | 1994-08-16 |
| 5300538 | Solid marking compositions | — | 1994-04-05 |
| 5048992 | Writing instrument including shock resistant ink compositions | — | 1991-09-17 |
| 5013361 | Ball-point writing instrument containing an aqueous ink composition | Laura K. Case, Chandrasen Gajria, Henry Peper | 1991-05-07 |
| 4992502 | Solid correction compositions | John A. Thompson | 1991-02-12 |
| 4971628 | Shock resistant ink compositions and writing instruments including the compositions | — | 1990-11-20 |
| 4671691 | Ball-point writing instrument containing an aqueous ink composition | Laura K. Case, Chandrasen Gajria, Henry Peper | 1987-06-09 |