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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8008411

Type

Invention Patent

Filing

12/19/1980

Publication

-

Progress at the INPI

  1. Filing12/19/80
  2. Publication
  3. Examination07/26/83
  4. Allowance01/24/84
  5. Grant07/31/84
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

De Nora Permelec S.p.A.

IT

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Inventors

B. G. (pessoa física)

M. G. (pessoa física)

N. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.11

05/23/1989

RPI 970

20.4

02/08/1989

RPI 955

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/24/1984

RPI 692

Solicitação de exame técnico

#4.1

07/26/1983

RPI 666

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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