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Official data from INPI

PROCESSO PARA REALIZAR SUBSTITUICAO NUCLEOFILICA SOBRE UM SUBSTRATO; PROCESSO PARA PREPARAR CLORETO DE SULFONILA, TIOFENOL E BIS-TIOFENOL

ConcedidaInvention Patent

Application data

Number

PI8302508

Type

Invention Patent

Filing

05/17/1982

Publication

01/17/1984

Progress at the INPI

  1. Filing05/17/82
  2. Publication01/17/84
  3. Examination01/15/85
  4. Allowance05/31/88
  5. Grant01/10/89
  6. Terminated04/25/95

The patent was granted on 01/10/1989 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: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

J. D. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/10/1989

RPI 951

Notificação para pagamento de retribuição

#13.1

09/20/1988

RPI 935

Deferimento

#9.1

05/31/1988

RPI 919

Exigência - art. 36 da LPI

#6.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

08/13/1985

RPI 773

Solicitação de exame técnico

#4.1

01/15/1985

RPI 743

Publicação do pedido de patente

#3.1

01/17/1984

RPI 691

Pedido de patente depositado

#2.1

06/28/1983

RPI 662

Anuidade - prazo legal encerrado

#18.2

04/25/1995

RPI 1273

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