Invalidity dossier

US 5432526

Liquid crystal display having conductive cooling

Current assignee: Individual

Added 9/23/2026, 4:16:51 PM

At a glanceNo PTAB challengesNo litigation on file

Active provider: DeepSeek · deepseek-flash

Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

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Patent Overview — US5432526A

Title: Liquid crystal display having conductive cooling

Patent number: US5432526A
Application number: US07/515,881
Inventor: Gilbert P. Hyatt
Original assignee / current assignee (as listed): Individual
Filing date: 1990-04-27
Publication/grant date: 1995-07-11
Priority date (listed as an assumption): 1970-12-28
Legal status: Expired – Lifetime; anticipated expiration 2012-07-11
Source: https://patents.google.com/patent/[US5432526](/patent/US5432526)/en

Purpose and plain-language scope (from the supplied text):
The title and prior-art keywords — illumination, liquid crystal, controller, source, generating — indicate a liquid crystal display in which heat is managed by conductive cooling. Beyond that, the supplied excerpt does not contain the abstract, specification, or claims, so the precise mechanism, the conductive path, and the illumination/controller arrangement cannot be described from this text alone.

What the excerpt does establish:

  • Bibliographic data above, plus a chain of "external-priority" claims from earlier Hyatt applications (e.g., US05/230,872 filed 1972-03-01; US05/232,459 filed 1972-03-07; and others running through 1977-10-25), each linked to a granted US patent.
  • Classification data, including B60R16/00–B60R16/0373 (vehicle electric circuits; occupant comfort; voice control) and an F21 (lighting) class entry that is truncated in the provided text.

What the excerpt does not establish:

  • The actual claims, their number, or their scope.
  • The detailed description, drawings, or embodiments — the images region of the source is blank in the supplied text.
  • Whether the listed priority chain was perfected, or what subject matter each parent contributed.
  • The accuracy of assignee, priority, or legal-status entries; the source itself labels these as assumptions, not legal conclusions.

Nothing here should be read as a statement about validity, enforceability, ownership history, or prior art.

Generated 10/1/2026, 9:50:59 PM

Cases on file (0)

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Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

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Proceedings on file (0)

All PTAB activity →

AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.

No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.

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.

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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.

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Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

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Obviousness

Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.

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Extensions

Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.

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Derivative works

Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.

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