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Official data from INPI

PROCESSO PARA ELETRODEPOSICAO IN SITU DE UM REVESTIMENTO DE UMA LIGA DE NIQUEL-ZINCO SOBRE SUPERFICIES DE TUBOS DE CATODO

Em AnáliseInvention Patent
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Application data

Number

PI7804819

Type

Invention Patent

Filing

07/27/1977

Publication

-
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Progress at the INPI

  1. Filing07/27/77
  2. Publication
  3. Examination
  4. Allowance05/31/83
  5. Grant11/29/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 03/18/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DIAMOND SHAMROCK CORP

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Inventors

B. J. (pessoa física)

B. C. (pessoa física)

M. I. (pessoa física)

Technical data

IPC Classification

C25B 11/02C25B 1/34C25D 3/56

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

03/18/1986

RPI 804

20.7

03/11/1986

RPI 803

20.4

03/04/1986

RPI 802

20.4

02/18/1986

RPI 800

16.3

02/14/1984

RPI 695

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/31/1983

RPI 658

Republicação - classificação IPC

#15.11

01/11/1983

RPI 638

Exigência - art. 36 da LPI

#6.1

09/08/1982

RPI 620

6.2

12/22/1981

RPI 583

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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