Biosynthetic Technologies, LLC

45 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 3 name spellings.

Ending by 2030

Aug 2031

Next term end

When these terms end

5 yrs10 yrs20 yrs

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 Nov 26, 2026
The maintenance fee for Processes of preparing estolide compounds that include removing sulfonate residues (US 9,040,729) comes due Nov 26, 2026. Unpaid by May 26, 2027, it lapses early.
1 fee due Jan 7, 2027
The maintenance fee for Dielectric fluids comprising estolide compounds and methods of making and using the same (US 9,076,588) comes due Jan 7, 2027. Unpaid by Jul 7, 2027, it lapses early.
3 fees due Mar 15 to 29, 2027 · next Mar 15
1 fee due Jun 1, 2027
The maintenance fee for Processes for preparing estolide base oils and oligomeric compounds that include cross metathesis (US 9,199,911) comes due Jun 1, 2027. Unpaid by Dec 1, 2027, it lapses early.
1 fee due Jul 5, 2027
The maintenance fee for High- and low-viscosity estolide base oils and lubricants (US 9,228,146) comes due Jul 5, 2027. Unpaid by Jan 5, 2028, it lapses early.
1 fee due Sep 8, 2027
The maintenance fee for Estolide and lubricant compositions that contain ene and Diels Alder compounds (US 9,279,092) comes due Sep 8, 2027. Unpaid by Mar 8, 2028, it lapses early.
1 fee due Nov 3, 2027
The maintenance fee for Catalytic processes for preparing estolide base oils (US 9,328,305) comes due Nov 3, 2027. Unpaid by May 3, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

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 8,450,256	High- and low-viscosity estolide base oils and lubricants In force Ends no later than Aug 31, 2031 · From the USPTO record	In force	Ends no later than Aug 31, 2031	From the USPTO record
US 8,486,875	High- and low-viscosity estolide base oils and lubricants In force Term ends Aug 31, 2031 · From the USPTO record	In force	Term ends Aug 31, 2031	From the USPTO record
US 8,975,425	Catalytic Processes for Preparing Estolide Base Oils In force Term ends Aug 31, 2031 · Medium confidence	In force	Term ends Aug 31, 2031	Medium confidence
US 9,228,146	High- and low-viscosity estolide base oils and lubricants In force Ends no later than Aug 31, 2031 · From the USPTO record	In force	Ends no later than Aug 31, 2031	From the USPTO record
US 9,328,305	Catalytic processes for preparing estolide base oils In force Term ends Aug 31, 2031 · From the USPTO record	In force	Term ends Aug 31, 2031	From the USPTO record
US 9,650,328	High-and low-viscosity estolide base oils and lubricants In force Ends no later than Aug 31, 2031 · From the USPTO record	In force	Ends no later than Aug 31, 2031	From the USPTO record
US 8,455,412	Acetic acid-capped estolide base oils and methods of making the same In force Term ends Sep 13, 2031 · From the USPTO record	In force	Term ends Sep 13, 2031	From the USPTO record
US 9,605,231	Grease compositions comprising estolide base oils In force Ends no later than Feb 6, 2032 · From the USPTO record	In force	Ends no later than Feb 6, 2032	From the USPTO record
US 10,150,931	Grease compositions comprising estolide base oils In force Ends no later than Feb 6, 2032 · From the USPTO record	In force	Ends no later than Feb 6, 2032	From the USPTO record
US 8,404,867	Sulfurized estolides and methods of making and using the same In force Term ends Feb 8, 2032 · From the USPTO record	In force	Term ends Feb 8, 2032	From the USPTO record

10 of 45 patents shown.

Pro members see all 45.

Pro members: see all 45 patents

Also on record, not counted in the 45: 11 lapsed for an unpaid fee. 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.

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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.

17 no status recorded

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