Ludwig; Frank A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ludwig; Frank A..The latest application filed is for "method of monitoring constituents in electroless plating baths".
- Ludwig; Frank A. - Rancho Palos Verdes CA
- Ludwig; Frank A. - Palos Verdes CA
- Ludwig; Frank A. - Irvine CA
- Ludwig; Frank A. - Southfield MI
| Patent | Date |
|---|---|
| Method of monitoring constituents in electroless plating baths Grant 5,755,954 - Ludwig , et al. May 26, 1 | 1998-05-26 |
| Method of monitoring constituents in conversion coating baths Grant 5,753,101 - Ludwig May 19, 1 | 1998-05-19 |
| Method of monitoring acid concentration in plating baths Grant 5,391,271 - Ludwig February 21, 1 | 1995-02-21 |
| Method of monitoring constituents in plating baths Grant 5,320,724 - Ludwig , et al. June 14, 1 | 1994-06-14 |
| Electrochemical synapses for artificial neural networks Grant 5,315,162 - McHardy , et al. May 24, 1 | 1994-05-24 |
| Acid-base concentration cell for electric power generation Grant 5,304,430 - Ludwig April 19, 1 | 1994-04-19 |
| Method of monitoring metal ion content in plating baths Grant 5,298,131 - Eliash , et al. March 29, 1 | 1994-03-29 |
| Method for monitoring purification treatment in plating baths Grant 5,298,132 - Reddy , et al. March 29, 1 | 1994-03-29 |
| In-tank electrochemical sensor Grant 5,296,123 - Reddy , et al. March 22, 1 | 1994-03-22 |
| Electrochemical interconnection Grant 5,290,423 - Helber, Jr. , et al. March 1, 1 | 1994-03-01 |
| In-tank conductivity sensor Grant 5,287,060 - Reddy , et al. February 15, 1 | 1994-02-15 |
| Electrolytic pump Grant 5,252,192 - Ludwig October 12, 1 | 1993-10-12 |
| Thermally regenerated fuel cell Grant 5,208,112 - Ludwig , et al. May 4, 1 | 1993-05-04 |
| Gas-recirculating electrode for electrochemical system Grant 5,087,534 - Ludwig February 11, 1 | 1992-02-11 |
| Gas permeable electrode for electrochemical system Grant 4,865,925 - Ludwig , et al. September 12, 1 | 1989-09-12 |
| Sulfuric acid thermoelectrochemical system and method Grant 4,810,596 - Ludwig March 7, 1 | 1989-03-07 |
| Electrochemical capacitor Grant 4,766,522 - McHardy , et al. August 23, 1 | 1988-08-23 |
| Low temperature thermoelectrochemical system and method Grant 4,738,904 - Ludwig , et al. April 19, 1 | 1988-04-19 |
| Method of monitoring trace constituents in plating baths Grant 4,631,116 - Ludwig December 23, 1 | 1986-12-23 |
| Electroless silver plating process and system Grant 4,550,036 - Ludwig , et al. October 29, 1 | 1985-10-29 |
| Sodium sulfur container with chromium/chromium oxide coating Grant 4,248,943 - Ludwig , et al. February 3, 1 | 1981-02-03 |
| Secondary battery or cell with vitreous carbon coated graphite current collector Grant 4,048,394 - Ludwig September 13, 1 | 1977-09-13 |
| Sodium sulfur battery or cell with external storage Grant 4,038,465 - Ludwig , et al. July 26, 1 | 1977-07-26 |
| Alkali metal, sulfur battery or cell with single phase sulfur electrode Grant 4,002,807 - Ludwig January 11, 1 | 1977-01-11 |
| Secondary battery with separate charge and discharge zones Grant 3,994,745 - Ludwig November 30, 1 | 1976-11-30 |
| Secondary battery or cell with composite electrode Grant 3,993,503 - Ludwig November 23, 1 | 1976-11-23 |
| Secondary battery or cell with dual electrode Grant 3,985,575 - Ludwig October 12, 1 | 1976-10-12 |
| Energy conversion devices with improved electrode shapes Grant 3,980,496 - Ludwig , et al. September 14, 1 | 1976-09-14 |
| Sodium sulfur battery or cell with improved ampere-hour capacity Grant 3,966,492 - Ludwig June 29, 1 | 1976-06-29 |
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