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Official data from INPI

PROCESSO PARA PROVIMENTO DE LAMINADOS DE ALTA PRESSAO E CONJUNTO LAMINAVEL PARA FORMAR OS MESMOS

ConcedidaInvention Patent

Application data

Number

PI7407804

Type

Invention Patent

Filing

09/19/1974

Publication

-

Progress at the INPI

  1. Filing09/19/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/12/81
  6. Expired11/24/92

The letters patent expired on 11/24/1992: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/12/1981. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. A. (pessoa física)

US

Inventors

E. B. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/12/1981

RPI 551

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B32B 31/00; B29D 29/00; B44D 5/04.

03/20/2018

RPI 2463

Carta-patente expirada

#21.1

11/24/1992

RPI 1147

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