Method for determining formation stress field using microseismic focal mechanisms and applications therefor to predict reservoir formation response before during and after hydraulic fracturing
US 10,451,754 Lapsed on the fee recordLapsed Oct 22, 2023 on the fee record · From the USPTO record
20-year base term ends Mar 8, 2037
First maintenance fee unpaid; grace period ended.
Mar 8, 2017
Oct 22, 2023
Oct 22, 2019
Apr 18, 2038
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 8, 2017, when this application, 15/453,616, was filed | Mar 8, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +406 days, USPTO patent term adjustment record | Apr 18, 2038 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Oct 22, 2023 | High confidence |
| Computed term end | The steps above, in order | Oct 22, 2023 | From the USPTO record |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
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