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Official data from INPI

PROCESSO PARA PRÉ-TRATAR CARGA DE ALIMENTAÇÃO DE HIDROCARBONETOS PESADOS

Em AnáliseInvention Patent

Application data

Number

PI8505673

Type

Invention Patent

Filing

03/04/1985

Publication

02/18/1986

Progress at the INPI

  1. Filing03/04/85
  2. Publication02/18/86
  3. Examination10/06/87
  4. Allowance01/02/91
  5. Grant07/30/91
  6. Terminated09/19/95

The patent was granted on 07/30/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/06/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stone & Webster Engineering Corporation

US

See this company's full portfolio

Inventors

A. J. (pessoa física)

US

D. D. (pessoa física)

US

E. B. (pessoa física)

US

J. R. (pessoa física)

US

R. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

587.937 · 03/09/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/06/1987

RPI 885

Notificação de entrada na fase nacional - PCT

#1.3

02/18/1986

RPI 800

Anuidade - prazo legal encerrado

#18.2

09/19/1995

RPI 1294

Concessão da patente

#16.1

07/30/1991

RPI 1078

Notificação para pagamento de retribuição

#13.1

04/16/1991

RPI 1063

Deferimento

#9.1

01/02/1991

RPI 1048

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