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Official data from INPI

DISPOSITIVO APERFEICOADO DE SUSTENTACAO DE REVESTIMENTOS

Em AnáliseInvention Patent

Application data

Number

PI7605346

Type

Invention Patent

Filing

08/13/1976

Publication

-

Progress at the INPI

  1. Filing08/13/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired07/20/93

The letters patent expired on 07/20/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/14/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. A. (pessoa física)

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Inventors

F. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

01/14/1986

RPI 795

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era E04B 5/55.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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