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Official data from INPI

PROCESSO DE PREPARACAO DE UMA COMPOSICAO DE REVESTIMENTO E COMPOSICAO DE PRE-MISTURA

Em AnáliseInvention Patent

Application data

Number

PI7603063

Type

Invention Patent

Filing

05/15/1975

Publication

-

Progress at the INPI

  1. Filing05/15/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 08/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DIAMOND SHAMROCK CORP

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Inventors

G. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

08/02/1988

RPI 928

Pedido de licença compulsória

#20.1

07/16/1985

RPI 769

20.7

09/04/1984

RPI 724

20.4

08/07/1984

RPI 720

20.4

07/10/1984

RPI 716

20.7

05/29/1984

RPI 710

Concessão da patente

#16.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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