Robert C. Coffin

Person

Zionsville, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Push-in earplug and method of making the same using a mandrel
- Patent number 11,786,408
- Issue date Oct 17, 2023
- 3M Innovative Properties Company
- Jacob H. Ely
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Foam compositions comprising polylactic acid polymer, polyvinyl ace...
- Patent number 11,407,872
- Issue date Aug 9, 2022
- 3M Innovative Properties Company
- Joshua M. Fishman
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Push-to-fit earplug with tip cavity
- Patent number 11,304,851
- Issue date Apr 19, 2022
- 3M Innovative Properties Company
- Robert C. Coffin
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Cold-drawn polyolefin copolymers cord for earplug
- Patent number 11,076,995
- Issue date Aug 3, 2021
- 3M Innovative Properties Company
- James D. Brown
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hearing protector
- Patent number D895901
- Issue date Sep 8, 2020
- 3M Innovative Properties Company
- Robert C. Coffin
- D29 - Equipment for safety, protection, and rescue
Information Patent Grant
Hearing protector
- Patent number D889754
- Issue date Jul 7, 2020
- 3M Innovative Properties Company
- Robert C. Coffin
- D29 - Equipment for safety, protection, and rescue

Patents Applicationslast 30 patents

Information Patent Application
PLASTIC ALLOY EARPLUG CORE
- Publication number 20220354698
- Publication date Nov 10, 2022
- 3M Innovative Properties Company
- Jacob H. Ely
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
PUSH-IN EARPLUG AND METHOD OF MAKING THE SAME USING A MANDREL
- Publication number 20220296420
- Publication date Sep 22, 2022
- 3M Innovative Properties Company
- Jacob H. Ely
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
COLD-DRAWN POLYOLEFIN COPOLYMERS CORD FOR EARPLUG
- Publication number 20210322224
- Publication date Oct 21, 2021
- 3M Innovative Properties Company
- James D. Brown
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
EARPLUS ASSEMBLY AND METHOD FOR FORMING THE SAME
- Publication number 20200390608
- Publication date Dec 17, 2020
- 3M INNOVATIVE PROPERTIES COMPANY
- Jacob H. ELY
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
PUSH-TO-FIT EARPLUG WITH TIP CAVITY
- Publication number 20200197224
- Publication date Jun 25, 2020
- 3M Innovative Properties Company
- Robert C. Coffin
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLD-DRAWN POLYOLEFIN COPOLYMERS CORD FOR EARPLUG
- Publication number 20200179173
- Publication date Jun 11, 2020
- 3M Innovative Properties Company
- James D. Brown
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
FOAM COMPOSITIONS COMPRISING POLYLACTIC ACID POLYMER, POLYVINYL ACE...
- Publication number 20190256677
- Publication date Aug 22, 2019
- 3M Innovative Properties Company
- Joshua M. Fishman
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Robert C. Coffin

Person

Patents Grantslast 30 patents

Push-in earplug and method of making the same using a mandrel

Foam compositions comprising polylactic acid polymer, polyvinyl ace...

Push-to-fit earplug with tip cavity

Cold-drawn polyolefin copolymers cord for earplug

Hearing protector

Hearing protector

Patents Applicationslast 30 patents

PLASTIC ALLOY EARPLUG CORE

PUSH-IN EARPLUG AND METHOD OF MAKING THE SAME USING A MANDREL

COLD-DRAWN POLYOLEFIN COPOLYMERS CORD FOR EARPLUG

EARPLUS ASSEMBLY AND METHOD FOR FORMING THE SAME

PUSH-TO-FIT EARPLUG WITH TIP CAVITY

COLD-DRAWN POLYOLEFIN COPOLYMERS CORD FOR EARPLUG

FOAM COMPOSITIONS COMPRISING POLYLACTIC ACID POLYMER, POLYVINYL ACE...