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Official data from INPI

COMPOSICAO ABRILHANTADORA,SOLUCAO ELETROLITICA DE ZINCO AQUOSA E PROCESSO PARA A ELETRODEPOSICAO DE UM REVESTIMENTO DE ZINCO

ConcedidaInvention Patent

Application data

Number

PI7902419

Type

Invention Patent

Filing

04/20/1978

Publication

-

Progress at the INPI

  1. Filing04/20/78
  2. Publication
  3. Examination
  4. Allowance11/20/84
  5. Grant05/28/85
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OXY METAL INDUSTRIES CORP

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Inventors

C. H. (pessoa física)

H. R. (pessoa física)

M. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/20/1984

RPI 735

8.1

10/02/1984

RPI 728

Exigência - art. 36 da LPI

#6.1

12/20/1983

RPI 687

Conhecimento de parecer técnico

#7.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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