Weld cleaning fluid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 27, 2018
Grant Date -
Jan 29, 2015
app pub date -
Sep 14, 2012
filing date -
Sep 15, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a weld cleaning fluid, and method of cleaning weld or discoloration especially on stainless steel. Stainless steel welds, such as those done by TIG welding, require cleaning to remove the resulting surface discoloration and also to passivate the steel. This is often done using an electro-cleaning apparatus with the assistance of electrolyte cleaning fluids. A new cleaning fluid has been developed that has a generally neutral pH, instead of the highly acidic nature of previously used fluids, which avoids environmental and safety issues. The cleaning fluid composition preferably has potassium or sodium orthophosphate salts as the main active ingredient, or similar such salts, and has a pH of around 7. It may also include a sequestering or chelating agent such as a sodium and/or potassium salt of EDTA, and coloring and fragrance.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B23H Class
- 103 Applications Filed
- 88 Patents Issued To-Date
- 85.44 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B23H Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 27, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 27, 2030 |
