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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE COMPOSTOS DE SULFONAMIDA.

Em ExigênciaInvention Patent

Application data

Number

PI8305964

Type

Invention Patent

Filing

10/27/1983

Publication

08/21/1984

Progress at the INPI

  1. Filing10/27/83
  2. Publication08/21/84
  3. Examination09/30/86
  4. Allowance05/08/90
  5. Grant11/27/90
  6. Terminated02/18/92

The patent was granted on 11/27/1990 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

See this company's full portfolio

Inventors

R. P. (pessoa física)

US

Technical data

Priority claims

US

437.632 · 10/29/1982

US

499.443 · 05/31/1983

US

533.341 · 09/20/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

09/26/1989

RPI 988

Solicitação de exame técnico

#4.1

09/30/1986

RPI 832

Publicação do pedido de patente

#3.1

08/21/1984

RPI 722

Pedido de patente depositado

#2.1

01/17/1984

RPI 691

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

Concessão da patente

#16.1

11/27/1990

RPI 1043

Notificação para pagamento de retribuição

#13.1

08/21/1990

RPI 1029

Deferimento

#9.1

05/08/1990

RPI 1017

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