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Official data from INPI

PROCESSO APERFEIÇOADO PARA PREPARAR DERIVADOS SULÚVEIS EM ÓLEO DE DERIVADOS DE ÁCIDO DICARBOXILICO DE C4 C10 INSATURADOS.

ConcedidaInvention Patent

Application data

Number

PI7907973

Type

Invention Patent

Filing

12/06/1979

Publication

-

Progress at the INPI

  1. Filing12/06/79
  2. Publication
  3. Examination12/14/82
  4. Allowance12/26/84
  5. Grant06/25/85
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 06/25/1985. 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

W. M. (pessoa física)

Technical data

Priority claims

US

967.276 · 12/07/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

04/16/1985

RPI 756

Deferimento

#9.1

12/26/1984

RPI 740

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C08F 2/06; C08F 210/10; C10M 1/28; C10M 3/22.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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