Patents
US 12157686 B2: Systems and methods for sanitizing pool and spa water
- Granted
- 2024-12-03
- Filed
- 2021-02-26 application 17187233
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Systems and methods for sanitizing pool and spa water are provided. An electrolytic chlorinator is provided which includes a combined flow, temperature, and salt concentration sensor. The electrolytic chlorinator could include an acid tank for in-situ cleaning of the electrolytic chlorinator or acidification of pool/spa water where needed. A delayed polarity reversal technique is provided for de-scaling and managing passivation of the blades of an electrolytic chlorinator. The electrolytic chlorinator could include a sacrificial anode for protecting components of the chlorinator as well as other pool/spa components. The electrolytic chlorinator could include an integral, electrically-controlled acid generator, a brine tank for periodically superchlorinating and/or shocking pool/spa water, and/or a plurality of chemical tanks/feeds for periodically injecting chemicals into the chlorinator. A combined ultraviolet (UV)/Ozone and salt (electrolytic) chlorine generator is provided, as well as: filters having integral UV sanitizers; reflective linings for UV sanitization systems; means for injecting bubbles into pool/spa water; and a system for acquiring and analyzing samples of pool/spa water using an unmanned aircraft (drone).
Source: PVGPATDIS, file of 2026-04-10 (ipg241203.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Hayward Industries, Inc. 190 patents | US company or organization | Charlotte, NC | HAYWARD INDUSTRIES, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Raymond P. Denkewicz, Jr. | Bradenton, FL | 10 | PVGPATDIS, file of 2026-04-10 | |
| Arthur W. Johnson, III | Stoughton, MA | 18 | PVGPATDIS, file of 2026-04-10 | |
| James Murdock | Wakefield, RI | 43 | PVGPATDIS, file of 2026-04-10 | |
| James Carter | Rehoboth, MA | 39 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C02F | Treatment of water, waste water, sewage, or sludge | C02F1/4674 | PVGPATDIS, file of 2026-04-10 |
| B64C | Aeroplanes; helicopters | B64C39/02 | PVGPATDIS, file of 2026-04-10 |
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N33/0052 | PVGPATDIS, file of 2026-04-10 |
| B64U | Unmanned aerial vehicles [uav]; equipment therefor | B64U2101/00 | PVGPATDIS, file of 2026-04-10 |
| Y02W | Climate change mitigation technologies related to wastewater treatment or waste management | Y02W10/37 | 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 |
|---|---|---|---|---|---|
| 2026-06-24 | Release of security interest Termination and release of security interest in patent rights at reel 056540, frame 0771 | BANK OF AMERICA, N.A. signed 2026-06-23 | HAYWARD INDUSTRIES, INC. ELIZABETH, NJ | 75818/652 | PASDL, file of 2026-10-15 |
| 2026-06-24 | Release of security interest Termination and release of security interest in patent rights at reel 070486, frame 0425 | BANK OF AMERICA, N.A. signed 2026-06-23 | HAYWARD INDUSTRIES, INC. ELIZABETH, NJ | 75813/555 | PASDL, file of 2026-10-15 |
| 2026-06-23 | Security interest Security interest Security interest | HAYWARD INDUSTRIES, INC. signed 2026-06-23 | BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT CHARLOTTE, NC | 75812/752 | PASDL, file of 2026-10-15 |
| 2025-03-12 | Correction First lien patent security agreement supplement | HAYWARD INDUSTRIES, INC. signed 2024-12-31 | BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT CHARLOTTE, NC | 70486/605 | PASDL, file of 2026-10-15 |
| 2025-03-12 | Correction Abl patent security agreement supplement | HAYWARD INDUSTRIES, INC. signed 2024-12-31 | BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT CHARLOTTE, NC | 70486/425 | PASDL, file of 2026-10-15 |
| 2021-06-10 | Correction Abl patent security agreement supplement | HAYWARD INDUSTRIES, INC. signed 2021-06-01 | BANK OF AMERICA, N.A., AS COLLATERAL AGENT CHARLOTTE, NC | 56540/771 | PASDL, file of 2026-10-15 |
| 2021-06-01 | Correction First lien patent security agreement supplement | HAYWARD INDUSTRIES, INC. signed 2021-05-28 | BANK OF AMERICA, N.A., AS COLLATERAL AGENT CHARLOTTE, NC | 56447/203 | PASDL, file of 2026-10-15 |
| 2021-02-26 | Assignment Assignment of assignor's interest | MURDOCK, JAMES signed 2019-10-17 CARTER, JAMES signed 2019-11-04 DENKEWICZ, RAYMOND P., JR. signed 2019-11-04 JOHNSON, ARTHUR W., III signed 2019-11-04 | HAYWARD INDUSTRIES, INC. ELIZABETH, NJ | 55432/182 | ECORSEXC, file of 2026-09-25 |
| 2021-02-26 | Name change Assignee change of address | HAYWARD INDUSTRIES, INC. signed 2020-01-16 | HAYWARD INDUSTRIES, INC. BERKELEY HEIGHTS, NJ | 55429/98 | 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.