Patents
US 11940384 B2: Device and methods for determination of molecular weight distributions of polymers and distributions of other polymer properties without physical separation
- Granted
- 2024-03-26
- Filed
- 2022-09-23 application 17951721
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Devices and methods for determining the cumulative distribution of a polymer property in a reactor without physical separation of reaction subcomponents. The device includes a means of measuring an instantaneous property of the polymers being produced in a reaction vessel a plurality of times during a polymerization reaction as well as a means of determining the corresponding change in polymer concentration in the reaction vessel between measurements of the instantaneous polymer property. The device also includes a means of computing a statistical distribution appropriate to the polymer characteristic and applying the statistical distribution to a recently measured instantaneous value of the polymer property so as to have an instantaneous distribution of the polymer property and a means of adding together the instantaneous distributions of the polymer property in order to obtain the cumulative distribution of the polymer property in the reactor.
Source: PVGPATDIS, file of 2026-04-10 (ipg240326.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| YOKOGAWA FLUENCE ANALYTICS, INC. 6 patents | US company or organization | Missouri City, TX | PVGPATDIS, file of 2026-04-10 | |
| The Administrators of the Tulane Educational Fund 124 patents | US company or organization | New Orleans, LA | The Administrators of the Tulane Educational Fund State business registration EXACT high confidence: identical full name and state Tulane University of Louisiana College or university EXACT high confidence: through the nonprofit with the college's EIN (identical full name and state) THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Wayne Frederick Reed | New Orleans, LA | 19 | PVGPATDIS, file of 2026-04-10 | |
| Rick Montgomery | New Orleans, LA | 18 | PVGPATDIS, file of 2026-04-10 | |
| Michael Felix Drenski | New Orleans, LA | 11 | PVGPATDIS, file of 2026-04-10 | |
| Aide Wu | New Orleans, LA | 6 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N21/75 | PVGPATDIS, file of 2026-04-10 |
| B01J | Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus | B01J19/0006 | PVGPATDIS, file of 2026-04-10 |
| C08F | Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds | C08F20/56 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-03-21 | Merger Merger and change of name | FLUENCE ANALYTICS, INC. signed 2023-01-30 YOKOGAWA VENTURE GROUP, INC. signed 2023-01-30 YOKOGAWA FLUENCE ANALYTICS, INC. signed 2023-01-30 | YOKOGAWA FLUENCE ANALYTICS, INC. STAFFORD, TX | 63043/175 | PASDL, file of 2026-10-15 |
| 2022-09-23 | Assignment Assignment of assignor's interest | DRENSKI, MICHAEL FELIX signed 2017-11-08 MONTGOMERY, RICK D signed 2017-11-08 WU, AIDE signed 2017-11-08 REED, WAYNE FREDERICK signed 2017-11-09 | ADVANCED POLYMER MONITORING TECHNOLOGIES, INC. NEW ORLEANS, LA THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND NEW ORLEANS, LA | 61196/845 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.