Aptech Engineering Services, Inc.
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 28, 2007 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 46 Total Citation Count
- Nov 30, 1989 Earliest Filing
- 5 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5311829 Method for reduction of sulfur oxides and particulates in coal combustion exhaust gasesMar 23, 92May 17, 94[F23J]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7261046 System and method of reducing pulverizer flammability hazard and boiler nitrous oxide outputExpiredJun 10, 04Aug 28, 07[F23J]
6883443 Method for reduction of slagging and fouling of the waterwalls and of the firebox and superheater and reheater of steam boilers with coal combustionExpiredSep 03, 03Apr 26, 05[F23J, F23B]
2004/0230,541 Process for estimating and reducing cost of cyclingAbandonedMay 16, 03Nov 18, 04[G06F]
5050108 Method for extending the useful life of boiler tubesExpiredNov 30, 89Sep 17, 91[G01K, G01N, F28F, G01B]
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