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Official data from INPI

PROCESSO APERFEICOADO PARA A REALIZACAO CONTINUA DE REACOES EXOTERMICAS NUM REATOR CONSTRUIDO EM FORMA DE COLUNA DE IRRIGACAO

ConcedidaInvention Patent

Application data

Number

PI7500577

Type

Invention Patent

Filing

01/30/1974

Publication

-

Progress at the INPI

  1. Filing01/30/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant01/25/83
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 01/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TEXACO AG

Inventors

B. G. (pessoa física)

N. W. (pessoa física)

W. W. (pessoa física)

W. J. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/25/1983

RPI 640

11.8

01/11/1983

RPI 638

Arquivamento - Art. 38 §2° da LPI

#11.4

11/09/1982

RPI 629

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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