Inventor

SHAFFER DAVID R

US3 patents

⚠️ This page may combine multiple inventors who share the name “SHAFFER DAVID R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UNIV NORTH CAROLINA

2 patents

US5766906AJun 16, 1998

Hepatitis A virus deletion mutants and vaccine formulations containing the same

UNIV NORTH CAROLINA18 citations88

US6136322AOct 24, 2000

Hepatitis A virus deletion mutants and vaccine formulations containing the same

UNIV NORTH CAROLINA8 citations69

SHAFFER DAVID R

1 patent

US8778036B2Jul 15, 2014

Upgrading carbonaceous materials

SHAFFER DAVID R0 citations39