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Official data from INPI

PROCESSO PARA PREPARAR UMA MISTURA DE 1,4-BUTANODIOL E 2-ALQUIL-1,4-BUTANODIOL; PROCESSO PARA PREPARAR 2-ALQUIL-1,4-BUTANODIOL; PROCESSO PARA PREPARAR UMA MISTURA DE TETRAIDROFURANO E 3-ALQUILTETRAIDROFURANO; PROCESSO PARA PREPARAR UM COPOLÍMERO DE TETRAIDROFURANO E 3-ALQUILTETRAIDROFURANO.

Em AnáliseInvention Patent

Application data

Number

PI8402706

Type

Invention Patent

Filing

06/05/1984

Publication

05/14/1985

Progress at the INPI

  1. Filing06/05/84
  2. Publication05/14/85
  3. Examination06/23/87
  4. Allowance07/24/90
  5. Grant02/13/91
  6. Terminated09/05/95

The patent was granted on 02/13/1991 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: 06/23/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

R. E. (pessoa física)

US

Technical data

Priority claims

US

502.317 · 06/08/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/23/1987

RPI 870

Publicação do pedido de patente

#3.1

05/14/1985

RPI 760

Pedido de patente depositado

#2.1

08/14/1984

RPI 721

Anuidade - prazo legal encerrado

#18.2

09/05/1995

RPI 1292

Concessão da patente

#16.1

02/13/1991

RPI 1054

Notificação para pagamento de retribuição

#13.1

11/06/1990

RPI 1040

Deferimento

#9.1

07/24/1990

RPI 1025

Exigência - art. 36 da LPI

#6.1

01/16/1990

RPI 1002

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