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Official data from INPI

DISPOSITIVO DE CONTROLE CONTÍNUO DA EVACUAÇÃO DAS ESCÓRIAS NAS CALDEIRAS A CARVÃO DE CENTRAIS TÉRMICAS

Em ExigênciaInvention Patent

Application data

Number

PI8405972

Type

Invention Patent

Filing

11/23/1984

Publication

09/17/1985

Progress at the INPI

  1. Filing11/23/84
  2. Publication09/17/85
  3. Examination10/20/87
  4. Allowance01/23/90
  5. Grant08/28/90
  6. Terminated12/24/96

The patent was granted on 08/28/1990 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: 05/02/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stein Industrie

FR

See this company's full portfolio

Inventors

J. B. (pessoa física)

FR

J. M. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

83 18 811 · 11/25/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

05/02/1989

RPI 967

Exigência - art. 36 da LPI

#6.1

01/10/1989

RPI 951

Solicitação de exame técnico

#4.1

10/20/1987

RPI 887

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

02/05/1985

RPI 746

Anuidade - prazo legal encerrado

#18.2

12/24/1996

RPI 1360

Concessão da patente

#16.1

08/28/1990

RPI 1030

Notificação para pagamento de retribuição

#13.1

05/22/1990

RPI 1019

Deferimento

#9.1

01/23/1990

RPI 1003

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