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Official data from INPI

APERFEIÇOAMENTO EM UM TANQUE DE CARREGAMENTO DE LÍQUIDO DE UM VAGÃO-TANQUE FERROVIÁRIO E VÁLVULA COM ESCAPE AQUECIDO PARA VAGÃO-TANQUE FERROVIÁRIO

Em ExigênciaInvention Patent
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Application data

Number

PI8505431

Type

Invention Patent

Filing

01/28/1985

Publication

02/18/1986
View on INPI

Progress at the INPI

  1. Filing01/28/85
  2. Publication02/18/86
  3. Examination05/05/87
  4. Allowance04/02/91
  5. Grant11/26/91
  6. Terminated08/15/95

The patent was granted on 11/26/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 07/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. L. (pessoa física)

US

Inventors

R. L. (pessoa física)

US

Technical data

IPC Classification

B61D 27/00B61D 5/00F16K 49/00F28D 1/06

Priority claims

US

583.648 · 02/27/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

07/18/1989

RPI 978

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Notificação de entrada na fase nacional - PCT

#1.3

02/18/1986

RPI 800

Anuidade - prazo legal encerrado

#18.2

08/15/1995

RPI 1289

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

07/16/1991

RPI 1076

Deferimento

#9.1

04/02/1991

RPI 1061

Exigência - art. 36 da LPI

#6.1

11/06/1990

RPI 1040

Exigência - art. 36 da LPI

#6.1

06/05/1990

RPI 1021

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