Daniel W Mayer, 74Queen Creek, AZ

6382011, May 7, 2002

May 9, 2001

09/852250

Daniel W. Mayer - Wyoming MN
Mark D. Evans - West St. Paul MN
Craig K. Loebig - Monticello MN

Mocon, Inc. - Minneapolis MN

B01N 2100

73 106

A plug for providing a predetermined flow rate of leakage gas from a sealed package for purposes of calibration of gas measurement instruments, the plug having an axial passage therethrough with a threaded interior wall; and a bolt for threading into the plug axial passage, the bolt having an axial passage therethrough, and an insert for insertion into the bolt axial passage, the insert having a predetermined size opening for permitting only a predictable flow of leakage gas through the plug.

6450011, Sep 17, 2002

Nov 24, 2000

09/721623

Daniel W. Mayer - Wyoming MN
Robert L. Demorest - Maple Grove MN
Trevor H. Hegg - Maple Grove MN

Mocon, Inc. - Minneapolis MN

G01M 302

73 493, 73 52

A non-destructive method for testing sealed packages for leakage, particularly packages having a gas-permeable portion and a non-gas-permeable portion, by applying a temporary barrier over the gas-permeable portion, wherein the temporary barrier has an aperture, and connecting the aperture to a pressure monitor, and recording the pressure drop in the sealed package, via the aperture, for a predetermined time.

6450012, Sep 17, 2002

Apr 30, 2001

09/845914

Daniel W. Mayer - Wyoming MN
Mark D. Evans - Paul MN

Mocon, Inc. - Minneapolis MN

G01M 334

73 493, 73 407

A testing device for measuring leakage from packages, the device having an internal chamber for receiving the package and a cover for sealing the package into the chamber. A gas passage from the chamber to a gas detector carries gas to be measured, and an air passage into the chamber provides a purging passage, and a gas inlet passage though the cover admits gas into the upper part of the chamber.

6460405, Oct 8, 2002

Oct 2, 2000

09/676621

Daniel W. Mayer - Wyoming MN
Robert L. Demorest - Maple Grove MN
John Bode - Eden Prairie MN

Mocon, Inc. - Minneapolis MN

G01M 304

73 407, 73 493, 73 52

A non-destructive method for testing sealed packages for leakage, particularly packages having a gas-permeable portion and a non-gas-permeable portion, by applying a temporary barrier over the gas-permeable portion, wherein the temporary barrier has two apertures, and enclosing the package in a testing chamber having a carrier gas flowing through it to a detector, and passing a tracer gas through the package interior via the two apertures in the temporary barrier.

6609414, Aug 26, 2003

Jul 19, 2001

09/909385

Daniel W. Mayer - Wyoming MN
Craig K. Loebig - Monticello MN

Mocon, Inc. - Minneapolis MN

G01M 304

73 407, 73 498, 73 52

A fixture for testing a sealed container for possible leakage, having a removable cover and a silicon gel gasket affixed to the undersurface of the cover, and having a lower housing with a cavity for receiving the sealed container, the container top surface being isolated from the rest of the container surfaces by the silicon gel gasket.

6981403, Jan 3, 2006

Oct 31, 2003

10/698608

Timothy Alan Ascheman - Ramsey MN, US
Daniel W. Mayer - Wyoming MN, US

Mocon, Inc. - Minneapolis MN

G01N 15/08

73 38

Provided are an apparatus and a method for measuring gas transmission rates and nanoleaks of deformable and brittle materials. The apparatus includes a test chamber having an upper and lower diffusion cells that when closed form a chamber wall seal, a gas inlet and a gas outlet in fluid communication with the lower diffusion cell, the upper diffusion cell being fluidly connected to a high-vacuum mass spectrometer. The method of measuring gas transmission rates and nanoleaks includes placing a sealed package containing the test gas in the lower diffusion cell, closing the upper and lower diffusion cells, flushing the lower diffusion cell with a source of a second gas other than the test gas, closing off the source of the second gas; and measuring the leak rate of the sealed package.

7252014, Aug 7, 2007

Apr 17, 2006

11/405215

Daniel W. Mayer - Wyoming MN, US
Timothy A. Ascheman - Ramsey MN, US

Mocon, Inc. - Minneapolis MN

G01M 3/34
G01F 1/00
B65B 31/00

73861, 73 493, 53 79, 53403

An instrument and method for measuring the volume of a hermetically sealed, variable volume, pressure conforming container. The instrument includes a needle, a vacuum pump, a mass flow rate sensor and an integrator. The needle has a lumen operable for sealingly perforating a container and thereby placing the lumen of the needle in fluid communication with a retention chamber defined by the container. The vacuum pump evacuates the gaseous content from the retention chamber through the lumen defined by the needle and past a mass flow rate sensor for sensing mass flow rates pulled through the lumen and transmitting corresponding mass flow rate signals over time to the integrator. The integrator is programmed to integrate the received mass flow rate signals over time through achievement of an evacuated retention chamber to generate a total mass value, and calculate a volume from the total mass value employing the Ideal Gas Law.

7429027, Sep 30, 2008

Feb 8, 2006

11/349824

Daniel W. Mayer - Wyoming MN, US
Stephen D. Tuomela - Ramsey MN, US

Mocon, Inc. - Minneapolis MN

F16K 47/00
F16L 55/02

251122, 251282, 137874, 73 40

A needle valve with a hollow needle effective for permitting a portion of the fluid passing through the valve to flow throughout the valve and exit through any leaks in the valve, whereby any environmental fluid within the valve is displaced by the fluid passing through the valve.