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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7404000

Type

Invention Patent

Filing

05/17/1974

Publication

-

Progress at the INPI

  1. Filing05/17/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/25/82
  6. Expired08/25/92

The letters patent expired on 08/25/1992: 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: 09/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

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Inventors

E. B. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

09/01/1987

RPI 880

Concessão da patente

#16.1

05/25/1982

RPI 605

Notificação para pagamento de retribuição

#13.1

12/22/1981

RPI 583

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C07C 63/02.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

08/25/1992

RPI 1134

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