Analytical sample preparation system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 11, 1994
Issued Date -
N/A
app pub date -
Mar 6, 1992
filing date -
Mar 1, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for melting samples in crucibles above burners while moving the crucibles to mix the contents. The crucibles are supported by movable shafts on a movable subframe. The shafts can oscillate in a horizontal plane to mix the contents of the crucible. The subframe can also oscillate vertically to mix the contents of the crucible. The crucible mixing pattern is the sum of the horizontal and the vertical motion applied to the crucible. The crucible can be moved back away from the burner to add additional material to the crucible. The crucible can be moved forward, away from the burner, to pour the melted sample into either a heated casting dish or a container containing a solution. Nothing is added to or poured from the crucible while over the burners.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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LECO CORPORATION A CORP OF MICHIGAN | 3000 LAKEVIEW AVENUE ST JOSEPH MI 49085-2396 |
International Classification(s)

- 1992 Application Filing Year
- B01F Class
- 265 Applications Filed
- 102 Patents Issued To-Date
- 38.50 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Ford, Gordon C | St. Joseph, MI | 26 | 187 |
# of filed Patents : 26 Total Citations : 187 | |||
Willis, Peter M | Benton Harbor, MI | 24 | 278 |
# of filed Patents : 24 Total Citations : 278 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- B01F Class
- 0 % this patent is cited more than
- 31 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jul 06, 2015 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 07, 2015 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 07, 2015 |
Jun 07, 2015 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jan 16, 2015 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jun 07, 2011 | I | Issuance | |
May 21, 2010 | F | Filing | |
May 21, 2010 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEATH, JASON;BROENE, BILL;SIGNING DATES FROM 20100519 TO 20100520;REEL/FRAME:024426/0193 Owner name: SAF-HOLLAND, INC., MICHIGAN |

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