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Official data from INPI

PROCESSO APERFEIÇOADO PARA RECUPERAR ÁLCOOIS DE CORRENTES DE ALIMENTAÇÃO DE ÁCIDO/ÁLCOOL

Em AnáliseInvention Patent

Application data

Number

PI8502965

Type

Invention Patent

Filing

06/20/1985

Publication

05/27/1986

Progress at the INPI

  1. Filing06/20/85
  2. Publication05/27/86
  3. Examination02/09/88
  4. Allowance09/13/94
  5. Grant05/30/95
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/09/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company

US

See this company's full portfolio

Inventors

D. W. (pessoa física)

IL

W. D. (pessoa física)

US

Technical data

Priority claims

US

650.874 · 09/17/1984

US

650.875 · 09/17/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/09/1988

RPI 903

Publicação do pedido de patente

#3.1

05/27/1986

RPI 814

Pedido de patente depositado

#2.1

09/03/1985

RPI 776

Carta-patente expirada

#21.1

Patente extinta em 20/06/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

05/30/1995

RPI 1278

Notificação para pagamento de retribuição

#13.1

01/17/1995

RPI 1259

Deferimento

#9.1

09/13/1994

RPI 1241

Exigência - art. 36 da LPI

#6.1

03/02/1993

RPI 1161

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