Invalidity dossier
US 6116225
Laminar flow nozzle
Current assignee: Individual
Added 9/21/2026, 9:42:59 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 6,116,225 B1
Title: Laminar flow nozzle
Patent number: US6116225A
Application number: US09/080,177
Filing/priority date: 1998-05-16
Publication (grant) date: 2000-09-12
Anticipated expiration: 2018-05-16
Legal status as listed: Expired – Fee Related
Assignee: Individual (named inventors: Danny Thomas, Thomas Marabanian, Edward Parker)
Source: https://patents.google.com/patent/US6116225/en
Purpose: The patent describes a device functioning as a nozzle for mixing nitrous oxide with fuel to produce maximum horsepower in a racing car engine, referred to as the "laminar flow nozzle." Nitrous oxide adds oxygen so fuel combustion is more thorough and complete inside the nozzle tip; the invention also adds additional fuel through the nozzle by a more linear flow, which is said to prevent the engine damage that can occur when nitrous oxide is used with insufficient fuel. The nozzle is described as lightweight, inexpensive, and fitting most manifolds and solenoids.
Plain-language scope: In the preferred embodiment the nozzle is a single integral component with two cylindrical conduit protuberances supplying liquid fuel and nitrous oxide. Each conduit has one integrally formed channel; the channels continue through the nozzle chamber in a manner that becomes increasingly parallel and terminate at the opposite side, where a third integral threaded cylindrical conduit contains an emitter and orifice. Gas enters the emitter and mixes with droplet fuel in a contiguous dispersing chamber, and the combined gas and fuel enter the engine manifold. The channels must approach each other in near-linear fashion and be physically internal components of the nozzle. The nozzle is generally aluminum (alternatives: stainless steel, copper, brass). By contrast, prior-art nozzles are described as separate components joined by threaded means, with conduits entering at a "y"-shaped angle of roughly 25–35 degrees.
What the excerpt does not establish: It does not supply the full claim text, the complete specification, or the listed prior-art references; it provides no description drawings; and it does not establish litigation, ownership transfers, or validity.
Generated 10/1/2026, 10:01:55 PM
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Litigation summary
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Proceedings on file (0)
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PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
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Obviousness
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.