Patents
US 11857771 B2: Three-position plungers, film coated plungers and related syringe assemblies
- Granted
- 2024-01-02
- Filed
- 2020-11-30 application 17107241
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A three-position plunger is provided including a sleeve having an opening at a distal end, a pre-load cavity proximal to and in communication with the opening, a first cavity proximal to and in communication with the pre-load cavity, a second cavity proximal to and in communication with the pre-load cavity, and at least one rib. The rib(s) is generally aligned with the first cavity. The plunger further includes an insert configured to be displaced from the pre-load cavity to the first cavity and from the first cavity to the second cavity. The insert is configured to provide support for the compression of the rib(s) when the insert is positioned in the first cavity.
Source: PVGPATDIS, file of 2026-04-10 (ipg240102.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| SIO2 MEDICAL PRODUCTS, LLC 69 patents | US company or organization | Auburn, AL | SIO2 MEDICAL PRODUCTS, INC. State business registration FUZZY medium confidence: same name (legal endings aside) and state SiO2 Medical Products, Inc. Form D issuer FUZZY medium confidence: same name (legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jean-Pierre Giraud | Auburn, AL | 118 | PVGPATDIS, file of 2026-04-10 | |
| Bernard Sol | Maisons-Alfort, FR | 7 | PVGPATDIS, file of 2026-04-10 | |
| Robert J. Pangborn | Harbor Springs, MI | 21 | PVGPATDIS, file of 2026-04-10 | |
| Robert S. Abrams | Albany, NY | 39 | PVGPATDIS, file of 2026-04-10 | |
| Joseph W. Rogers | Marble Hall, PA | 19 | Person page FUZZY medium confidence | PVGPATDIS, file of 2026-04-10 |
| Peter J. Sagona | Pottstown, PA | 25 | PVGPATDIS, file of 2026-04-10 | |
| Michael J. Mims | Auburn, AL | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61M | Devices for introducing media into, or onto, the body ; devices for transducing body media or for taking media from the body ; devices for producing or ending sleep or stupor | A61M5/31578 | PVGPATDIS, file of 2026-04-10 |
| A61L | Methods or apparatus for sterilising materials or objects in general; disinfection, sterilisation or deodorisation of air; chemical aspects of bandages, dressings, absorbent pads or surgical articles; materials for bandages, dressings, absorbent pads or surgical articles | A61L31/048 | 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 |
|---|---|---|---|---|---|
| 2024-09-05 | Security interest Security interest Security interest | SIO2 MEDICAL PRODUCTS, LLC signed 2024-08-30 | OAKTREE FUND ADMINISTRATION, LLC LOS ANGELES, CA | 68849/489 | PASDL, file of 2026-10-15 |
| 2024-09-04 | Name change Change of name | SIO2 MEDICAL PRODUCTS, INC. signed 2024-08-30 | SIO2 MEDICAL PRODUCTS, LLC AUBURN,, AL | 68839/691 | PASDL, file of 2026-10-15 |
| 2023-08-09 | Security interest Security interest Security interest | SIO2 MEDICAL PRODUCTS, INC. signed 2023-08-03 | OAKTREE FUND ADMINISTRATION, LLC LOS ANGELES, CA | 64544/940 | PASDL, file of 2026-10-15 |
| 2023-04-05 | Release of security interest Release of security interest | THE TEACHERS RETIREMENT SYSTEM OF ALABAMA signed 2021-12-20 | SIO2 MEDICAL PRODUCTS, INC. AUBURN, AL | 63257/371 | PASDL, file of 2026-10-15 |
| 2022-12-07 | Security interest Security interest Security interest | SIO2 MEDICAL PRODUCTS, INC. signed 2022-12-07 | SALZUFER HOLDING INC., AS ADMINISTRATIVE AGENT TAMPA, FL | 62094/121 | PASDL, file of 2026-10-15 |
| 2022-03-15 | Assignment Assignment of assignor's interest | GIRAUD, JEAN-PIERRE signed 2017-03-23 SOL, BERNARD signed 2017-03-23 | BAMA SAS TORCY | 59367/204 | ECORSEXC, file of 2026-09-25 |
| 2022-03-15 | Assignment Assignment of assignor's interest | BAMA SAS signed 2017-03-23 | SIO2 MEDICAL PRODUCTS, INC. AUBURN, AL | 59270/261 | ECORSEXC, file of 2026-09-25 |
| 2022-03-15 | Assignment Assignment of assignor's interest | ROGERS, JOSEPH W. signed 2017-03-20 SAGONA, PETER S. signed 2017-03-20 PANGBORN, ROBERT J. signed 2017-03-21 ABRAMS, ROBERT S. signed 2017-03-24 SIMS, MICHAEL J. signed 2017-03-27 | SIO2 MEDICAL PRODUCTS, INC. AUBURN, AL | 59270/66 | ECORSEXC, file of 2026-09-25 |
| 2021-12-21 | Security interest Security interest Security interest | SIO2 MEDICAL PRODUCTS, INC. signed 2021-12-21 | OAKTREE FUND ADMINISTRATION, LLC LOS ANGELES, CA | 58562/158 | PASDL, file of 2026-10-15 |
| 2021-09-09 | Assignment Assignment of assignor's interest | BAMA SAS signed 2017-03-23 | SIO2 MEDICAL PRODUCTS, INC. AUBURN, AL | 57424/996 | ECORSEXC, file of 2026-09-25 |
| 2021-09-03 | Assignment Assignment of assignor's interest | ROGERS, JOSEPH W. signed 2017-03-20 SAGONA, PETER J. signed 2017-03-20 PANGBORN, ROBERT J. signed 2017-03-21 GIRAUD, JEAN-PIERRE signed 2017-03-23 SOL, BERNARD signed 2017-03-23 ABRAMS, ROBERT S. signed 2017-03-24 MIMS, MICHAEL J. signed 2017-03-27 | BAMA SAS TORCY SIO2 MEDICAL PRODUCTS, INC. AUBURN, AL | 57408/621 | ECORSEXC, file of 2026-09-25 |
| 2021-04-07 | Correction Security agreement amendment | SIO2 MEDICAL PRODUCTS, INC. signed 2021-02-05 | THE TEACHERS' RETIREMENT SYSTEM OF ALABAMA MONTGOMERY, AL | 55852/7 | PASDL, file of 2026-10-15 |
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.