Mainstream Engineering Corporation
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 7 name spellings.
6
Ending by 2030
Jun 2027
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Jan 16, 2027The maintenance fee for Fluid flow cell and method for photometric analysis (US 10,352,865) comes due Jan 16, 2027. Unpaid by Jul 16, 2027, it lapses early.
- 1 fee due Feb 4, 2027The maintenance fee for Enhanced charge-storage electrochemical double layer capacitors with nanoscale electrolyte confinement tunability, and a method for production thereof to obtain axi-symmetric, high surface area electrode growth (US 9,099,241) comes due Feb 4, 2027. Unpaid by Aug 4, 2027, it lapses early.
- 1 fee due Mar 10, 2027The maintenance fee for Mounting pad and method for deterring theft and securing outdoor equipment and appliances against high winds (US 10,408,493) comes due Mar 10, 2027. Unpaid by Sep 10, 2027, it lapses early.
- 2 fees due Apr 20 to 27, 2027 · next Apr 20
- 1 fee due May 21, 2027The maintenance fee for Mounting pad and method for deterring theft and securing outdoor equipment and appliances against high winds (US 11,821,573) comes due May 21, 2027. Unpaid by Nov 22, 2027, it lapses early.
- 2 fees due Jun 3 to 8, 2027 · next Jun 3
- 2 fees due Jul 23, 2027
- 3 fees due Aug 4 to 11, 2027 · next Aug 4
- 4 fees due Sep 3 to 30, 2027 · next Sep 3
- 4 fees due Oct 5 to 23, 2027 · next Oct 5
- 2 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,062,528 | Apparatus and method for self-heating and self-hydrating foods and beverages In force · From the USPTO record | In force | From the USPTO record | |
| US 7,566,409 | Replacement solvents having improved properties for refrigeration flushes In force · From the USPTO record | In force | From the USPTO record | |
| US 7,736,537 | Replacement solvents having improved properties for refrigeration flushes In force · From the USPTO record | In force | From the USPTO record | |
| US 7,740,025 | Method and apparatus for preventing drain line clogging over an extended time using liquid or solid biocides In force · From the USPTO record | In force | From the USPTO record | |
| US 7,846,332 | Apparatus and method for self-heating and self-hydrating foods and beverages In force · From the USPTO record | In force | From the USPTO record | |
| US 8,400,036 | High specific force capacity thrust magnetic bearing and method of making In force · From the USPTO record | In force | From the USPTO record | |
| US 8,192,158 | Apparatus and method to increase total-to-static pressure ratio across a turbine In force · From the USPTO record | In force | From the USPTO record | |
| US 8,544,575 | Lightweight internal combustion/electric hybrid power source for vehicles In force · From the USPTO record | In force | From the USPTO record | |
| US 8,905,333 | Diesel injector and method utilizing focused supercavitation to reduce spray penetration length In force · From the USPTO record | In force | From the USPTO record | |
| US 9,417,000 | Cost-effective remote monitoring, diagnostic and system health prediction system and method for vapor compression and heat pump units based on compressor discharge line temperature sampling In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 121: 1 lapsed for an unpaid fee · 61 ended at full term. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
1 pending · 8 no status recorded