Frank L. Sprowl

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Sturgis, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Plastic closure with compression molded liner
- Patent number 5,924,586
- Issue date Jul 20, 1999
- Owens-Illinois Closure Inc.
- James L. Gregory
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for making a tamper indicating package
- Patent number 5,690,882
- Issue date Nov 25, 1997
- Owens-Illinois Closure Inc.
- Frank L. Sprowl
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of making plastic beverage closure
- Patent number 5,650,113
- Issue date Jul 22, 1997
- Owens-Illinois Closure Inc.
- James L. Gregory
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Plastic beverage closure
- Patent number 5,462,187
- Issue date Oct 31, 1995
- Owens-Illinois Closure Inc.
- James L. Gregory
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Tamper indicating package
- Patent number 5,443,171
- Issue date Aug 22, 1995
- Owens-Illinois Closure Inc.
- Frank L. Sprowl
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Plastic beverage closure
- Patent number 5,265,747
- Issue date Nov 30, 1993
- Owens-Illinois Closure Inc.
- James L. Gregory
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL