Inventor · disambiguated record
David C. Donan, Jr.
Also filed as: DONAN DAVID C JR · DONAN JR DAVID C
8 granted patents·210 citations·filing 1978–1983
89Inventor score
Technology areasE21D
Top patents by PatentIndex Score
8 records- 0190US4557631AOff-center rock bolt anchor and methodDONAN JR DAVID C·Filed 1983·Granted Dec 10, 1985·47 cites·7 claims
- 0288US4453845ABase thrust anchor shell assemblyDONAN JR DAVID C·Filed 1983·Granted Jun 12, 1984·39 cites·10 claims
- 0387US4183699AWasher/gasket for mine roof bolt assemblyDONAN DAVID C JR·Filed 1978·Granted Jan 15, 1980·40 cites·6 claims
- 0485US4380407ADual thrust anchor shell assemblyWAIAMEA COMPANY INC·Filed 1981·Granted Apr 19, 1983·35 cites·9 claims
- 0570US4188158AMine roof bolt hole sealWAIAMEA CO INC·Filed 1978·Granted Feb 12, 1980·15 cites·6 claims
- 0662US4187040AMine roof bolt spike chemical dispenser assemblyWAIAMEA CO INC·Filed 1978·Granted Feb 5, 1980·11 cites·9 claims
- 0759US4300859ADual diameter bushing/seal for mine roof boltWAIAMEA COMPANY INC·Filed 1980·Granted Nov 17, 1981·12 cites·14 claims
- 0857US4293244APick arm anchor assemblyWAIMEA COMPANY INC·Filed 1979·Granted Oct 6, 1981·11 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when David C. Donan, Jr. files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →