36 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Apr 2033. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Apr 2033
Next term end
20
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Dec 2039 · High confidence
Also notable
Ends May 2038 · High confidence
Also notable
Ends Jun 2034 · High confidence
Adaptive Control of a Mower
US 11,357,167
Cited by 10 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2039.
Height Adjustable Mower Deck
US 11,160,207
Granted 2021. Computed term ends 2038.
Removing Sod from a Stacking Conveyor
US 10,155,632
Granted 2018 and renewed at 2 of 3 maintenance windows. Protection runs to 2034. A terminal disclaimer caps this term to an earlier patent's.
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 14, 2027The maintenance fee for Conveyor System For Controlling Spacing Between Sod Slabs (US 9,078,390) comes due Jan 14, 2027. Unpaid by Jul 14, 2027, it lapses early.
- 1 fee due May 28, 2027The maintenance fee for Tuning Synchronizing Variables Based on a Sod Harvester's Speed (US 11,825,777) comes due May 28, 2027. Unpaid by Nov 29, 2027, it lapses early.
- 1 fee due Jun 19, 2027The maintenance fee for Sod Roll Stacking Technique (US 11,844,314) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
- 1 fee due Jul 9, 2027The maintenance fee for Forming a Sod Roll (US 11,864,498) comes due Jul 9, 2027. Unpaid by Jan 10, 2028, it lapses early.
- 1 fee due Aug 16, 2027The maintenance fee for Sod Harvester Stacking Head That Is Movable with a Stacking Conveyor (US 9,258,937) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
- 1 fee due Sep 24, 2027The maintenance fee for Adaptive Control of a Mower (US 10,595,459) comes due Sep 24, 2027. Unpaid by Mar 24, 2028, it lapses early.
- 1 fee due Oct 7, 2027The maintenance fee for Sod Harvester Having Auxiliary Stacking Conveyor (US 10,609,861) comes due Oct 7, 2027. Unpaid by Apr 7, 2028, it lapses early.
Recent changes
- 2 of the patents on this record were granted since Aug 16, 2026
What they patent
The 5 largest of its 20 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Adaptive Control of a Mower | 14 in force | to Oct 2042 |
| Adjustable Mower Deck | 2 in force | to Jan 2039 |
| Sod Harvester Having Auxiliary Stacking Conveyor | 2 in force | to Aug 2036 |
| Removing Sod from a Stacking Conveyor | 2 in force | to Jun 2034 |
| Sod Roll Forming Mechanism | 1 in force | to Jan 2044 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,851,278 | Slab Lifting Conveyor System for Automated Turf Harvesting In force · High confidence | In force | High confidence | |
| US 8,978,779 | Articulated Cutting Head and Conveyor Mount for Sod Harvesting Machines In force · High confidence | In force | High confidence | |
| US 9,022,720 | Electrically Operated Turf Stacking System For Sod Harvesting Machine In force · High confidence | In force | High confidence | |
| US 9,078,390 | Conveyor System For Controlling Spacing Between Sod Slabs In force · High confidence | In force | High confidence | |
| US 9,363,937 | Removing Sod from a Stacking Conveyor In force · High confidence | In force | High confidence | |
| US 10,155,632 | Removing Sod from a Stacking Conveyor In force · High confidence | In force | High confidence | |
| US 9,258,937 | Sod Harvester Stacking Head That Is Movable with a Stacking Conveyor In force · High confidence | In force | High confidence | |
| US 10,609,861 | Sod Harvester Having Auxiliary Stacking Conveyor In force · High confidence | In force | High confidence | |
| US 9,629,296 | Sod Harvester Chop Mechanism Having Position Based Speed Control In force · High confidence | In force | High confidence | |
| US 9,894,824 | Sod Harvester Having Preliminary Stacking Head In force · High confidence | In force | High confidence |
Also on record, not counted in the 36: 3 applications pending. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.